| 'A' Companies (1317) | Years of activities |
|---|
| A & A Global Industries, Inc. [MD, USA] | 1989 to 2001 (13 years) |
| A & F Engineering Co. [IL, USA] | 1945 (1 year) |
| A & M Vending Machine Co. [Brooklyn, NY, USA] | 1932 (1 year) |
| A Bit Better Associates | 1980 (1 year) |
| A Kyuu Kid's [Japan] | 1990 (1 year) |
| A Studio | 1985 to 1989 (5 years) |
| A&F Soft. | 1981 to 1987 (7 years) |
| A&S Soft. | 1989 (1 year) |
| A&T-Soft | |
| A-1 Supply, Inc. [Reno, NV, USA] | 1975 to 1979 (5 years) |
| A-Max [Japan] | 1998 to 2002 (5 years) |
| A-One [Japan] | 1979 (1 year) |
| A-Trend | |
| A-Ware Educational Soft. | 1985 (1 year) |
| A-Wave, Inc. [Japan] | 1990 to 1991 (2 years) |
| A/V Concepts Corp. | 1985 (1 year) |
| A1 Games [Agetec TM] | 2000 to 2003 (4 years) |
| AA [Americade Amusement, Inc] [Cherry Hill, NJ, USA] | 1982 (1 year) |
| AAA [Ace Active Amusement] [Japan] | 2001 to 2014 (14 years) |
| AAA Game | 2001 (1 year) |
| AAAMI [Paray Vieille Porte, France] | 1982 (1 year) |
| Aackosoft [Netherlands] | 1982 to 1988 (7 years) |
| AAJS Computer Products | 1985 (1 year) |
| Aalbars, Huibert | 1989 to 1990 (2 years) |
| Aardvark Soft. | 1982 to 1987 (6 years) |
| Aaronix [Taiwan] | 1983 to 1992 (10 years) |
| Aaru [Japan] | 1996 to 2001 (6 years) |
| Aasvoguelle Productions | 1985 (1 year) |
| AB | |
| AB [Encase, IL, USA] | |
| AB Computers | 1980 (1 year) |
| AB Designs | 1987 (1 year) |
| ABA [Japan] | 1991 to 1992 (2 years) |
| Ababsoft | |
| Abaco d.o.o. [Sežana, Slovenia] | |
| Abacus | 1989 to 1991 (3 years) |
| Abacus Business Systems | 1984 (1 year) |
| Abacus Programs | 1982 to 1986 (5 years) |
| AbadLend [France] | 1985 (1 year) |
| Abalore Games | 2021 (1 year) |
| Abbate System [Italy] | |
| Abbex Electronics | 1982 to 1984 (3 years) |
| Abbey Games | 2013 to 2020 (8 years) |
| Abbey Mfg. Co. [Los Angeles, CA, USA] | 1948 (1 year) |
| ABC [Amusement Business Communication] [Japan] | |
| ABC Coin Machine Co. [IL, USA] | 1933 to 1934 (2 years) |
| ABC Popcorn Co. [Chicago, IL, USA] | 1947 (1 year) |
| ABC Soft. [Spain] | 1982 to 1986 (5 years) |
| ABC-klubben | |
| ABCO Novelty Co. [Chicago, IL, USA] | 1944 to 1953 (10 years) |
| Abe, Masahiro | |
| Abel | 2001 to 2002 (2 years) |
| Abel & Co., Bernard [NY, USA] | 1893 (1 year) |
| Abelson & Goodman & DiSessa | 1976 (1 year) |
| Abersoft | 1982 to 1984 (3 years) |
| ABH Corp. | 1988 (1 year) |
| Abilit [Japan] | 1999 to 2008 (10 years) |
| Abit | 1991 (1 year) |
| Able Art Soft. | 1993 (1 year) |
| Able Corp., Ltd. [Japan] | 1986 to 2004 (19 years) |
| ABM & Gecas [Italy] | 1994 (1 year) |
| ABM Electronics | 1995 to 1996 (2 years) |
| ABM Games | 1997 to 1999 (3 years) |
| Abnormal | 1988 to 2012 (25 years) |
| Abogado Powers | 1994 to 1996 (3 years) |
| Abominable, L' [France] | 1985 (1 year) |
| Abracadata, Ltd. | 1986 to 1990 (5 years) |
| Abraham Mfg. Co., J.M. [Youngstown, OH, USA] | 1948 to 1949 (2 years) |
| Abrasco | 1983 to 1984 (2 years) |
| Abraxas | 1985 to 1988 (4 years) |
| Abraxas Basic Courseware | 1983 to 1986 (4 years) |
| Abraxas Soft. | 1985 (1 year) |
| Absolute Ent., Inc. [Midland Park, NJ, USA] | 1987 to 1994 (8 years) |
| Absolute Gaming S.R.L. [Italy] | |
| Abstract Concepts | 1988 (1 year) |
| Abstract Soft. | 1987 (1 year) |
| ABT Mfg. Co. [Adler Bechtol Tratsch] [Chicago, IL, USA] | 1924 to 1950 (27 years) |
| ABX Soft. | 1985 (1 year) |
| Abylight | |
| Abyss Connection | 1988 to 2016 (29 years) |
| AC Coin & Slot [USA] | 2002 to 2011 (10 years) |
| AC Novelty Co. [Detroit, MI, USA] | 1936 to 1938 (3 years) |
| AC, Ltd. | 1989 (1 year) |
| Academic Hallmarks | 1984 to 1987 (4 years) |
| Academy [Germany] | 1978 (1 year) |
| Academy Soft. | 1983 (1 year) |
| Accept, Ltd. [Bulgaria] | 1997 (1 year) |
| Access Co., Ltd. [Japan] | 1999 (1 year) |
| Access Music GmbH [Germany] | 1997 to 2004 (8 years) |
| Access Soft., Inc. | 1983 to 1999 (17 years) |
| Accidental Soft. | 1994 (1 year) |
| Acclaim Coin-Operated Ent., Inc. [Mountain View, CA, USA] | 1996 to 1997 (2 years) |
| Acclaim Ent., Inc. [Glen Cove, NY, USA] | 1987 to 2004 (18 years) |
| Acclaim Japan | 1991 to 2002 (12 years) |
| Accolade, Inc. [San Jose, CA, USA] | 1985 to 2017 (33 years) |
| Accord Data International, Ltd. | 1983 (1 year) |
| Accrosoft | 1993 (1 year) |
| ACCS | 1993 to 1995 (3 years) |
| Accuracy | 1991 to 1995 (5 years) |
| Accurate Research, Inc. | 1994 (1 year) |
| ACE | 1986 to 1987 (2 years) |
| ACE [American Coin Enterprises] [USA] | 1986 to 1998 (13 years) |
| ACE [Amiable Computer Enhancements] | 1984 to 1985 (2 years) |
| ACE [Angus Computing Enterprise] | 1991 to 1992 (2 years) |
| ACE [Nederlands] | 1981 to 1982 (2 years) |
| Ace Coin Ent., Ltd. [Cardiff, England] | 2009 (1 year) |
| Ace Coin Equipment, Ltd. [Cardiff, England] | 1966 to 2002 (37 years) |
| Ace Coin Machine Co. | |
| Ace Computing | 1989 (1 year) |
| Ace Enterpise | 1998 (1 year) |
| Ace International | 1996 to 1997 (2 years) |
| Ace Kouki Co., Ltd. [Japan] | 1974 (1 year) |
| Ace Media | 2000 (1 year) |
| Ace Mfg. Co., Inc. [Glen Burnie, MD, USA] | 1964 (1 year) |
| Ace Novelty Co., The [Chicago, IL, USA] | 1932 (1 year) |
| ACE Soft. | 1984 to 1989 (6 years) |
| Ace Spiel & Uhr [Germany] | |
| Ace Ware | 1992 to 1993 (2 years) |
| Aceex Corp. | 1995 (1 year) |
| AcePak Soft. | 1984 (1 year) |
| Acer America Corp. | 1995 (1 year) |
| Acetronic | 1979 to 1982 (4 years) |
| ACG [Ashby Computers & Graphics, Ltd.] | 1983 to 1985 (3 years) |
| Achille et Salvignac [France] | 1985 (1 year) |
| Acid Plan [Japan] | 1992 to 1996 (5 years) |
| Acid Soft. | 1991 to 1997 (7 years) |
| Aciform Corp. [Chicago, IL, USA] | |
| Ackerlight | 1988 (1 year) |
| ACL Mfg. [American Communications Laboratories] [Dover, DE, USA] | 1983 (1 year) |
| Acme Animation, Inc. | 1988 (1 year) |
| Acme Game Co. [MI, USA] | 1940 (1 year) |
| Acme Novelty Co. [Las Vegas, NV, USA] | 1960 (1 year) |
| Acme Novelty Works [MI, USA] | 1891 (1 year) |
| ACME S.R.L. [VI, Italy] | |
| Acme Sales Co. [NY, USA] | 1936 (1 year) |
| Acme Sales Co. [OH, USA] | 1905 to 1922 (18 years) |
| ACME Soft. | 1983 to 1988 (6 years) |
| Acolyte Soft. | 1988 (1 year) |
| Acom | 1983 (1 year) |
| Acord Games | 1992 (1 year) |
| Acorn Computer, Ltd. [Cambridge, England] | 1979 to 1997 (19 years) |
| Acorn Computing | 1992 to 1995 (4 years) |
| Acorn Electron Today | 2017 (1 year) |
| Acorn Soft. Products, Inc. [DC, USA] | 1981 to 1982 (2 years) |
| Acorn User | 1983 to 1998 (16 years) |
| Acorn, Inc. | 1979 to 1986 (8 years) |
| Acornsoft, Ltd. [England] | 1980 to 1990 (11 years) |
| Acoustimed | 1984 (1 year) |
| Acquire Corp. [Japan] | 2000 to 2015 (16 years) |
| Across [Universal Entreprises Group] [Japan] | 2013 to 2016 (4 years) |
| ACS | 1987 to 1988 (2 years) |
| ACS [Amiga Cracking Service] | 1987 (1 year) |
| ACS Soft. [Alexander Computing Systems] | 1982 to 1985 (4 years) |
| ACT | 2001 (1 year) |
| ACT [Applied Computer Techniques] | 1983 to 1987 (5 years) |
| ACT [Association des Correspondants Thomsonistes] [France] | 1994 to 1995 (2 years) |
| Act Informatique | 1985 (1 year) |
| Acti-Art Corp. | 1996 (1 year) |
| Action Games & Toys, Ltd. | 1979 (1 year) |
| Action Sixteen [Digital Integration TM] | 1990 to 1996 (7 years) |
| Action Surf Video [CA, USA] | 1987 (1 year) |
| ActionSoft | 1987 (1 year) |
| Actionware | 1988 to 1989 (2 years) |
| Active Amusement Machines Co. [Philadelphia, PA, USA] | 1944 (1 year) |
| Active Cracking Crew | 1983 to 1987 (5 years) |
| Active Enterprises, Ltd. [USA] | 1991 to 2012 (22 years) |
| Active Learning Systems | 1985 (1 year) |
| Active Soft. | 1982 (1 year) |
| Active Soft. [Japan] | 1991 to 1997 (7 years) |
| Active Swapping Crew | 1988 (1 year) |
| Activision, Inc. [Santa Clara, CA, USA] | 1980 to 2019 (40 years) |
| Activity Records, Inc. | 1980 (1 year) |
| Actor, Jeff | 1986 to 1987 (2 years) |
| Actronics | 1981 to 1983 (3 years) |
| Actual Cracking Ent. | 1987 to 1988 (2 years) |
| Actual Trading Generation | 1988 to 2012 (25 years) |
| ACZ Soft. | 1984 (1 year) |
| Ad Astra | 1984 (1 year) |
| Ad Lib | 1989 to 1991 (3 years) |
| Ad-Lee Novelty [Chicago, IL, USA] | 1915 to 1939 (25 years) |
| Adacom | 1989 (1 year) |
| Adalio Mauro [Modena, Italy] | 2001 (1 year) |
| Adam & Eve [Japan] | |
| ADAM Christian Educational | 1983 (1 year) |
| ADAM Exchange | |
| ADAM News Network | 1991 to 2012 (22 years) |
| ADAM Tech | |
| ADAM Users Club | |
| ADAM Users Group | 1986 (1 year) |
| ADAM's Apple | 1986 (1 year) |
| ADAM's Enterprise | 1984 (1 year) |
| ADAM's House | 1987 to 1988 (2 years) |
| ADAM-Link of Utah | 1990 (1 year) |
| ADAMagic Soft. | 1986 to 1988 (3 years) |
| ADAMLand | |
| Adams & Sons Co. [Brooklyn, NY, USA] | 1893 (1 year) |
| Adams Gum Co. | 1915 (1 year) |
| Adams, Peter | 1984 (1 year) |
| Adams, Scott | |
| Adams-Fairfax Corp. [Los Angeles, CA, USA] | 1946 to 1948 (3 years) |
| ADAMware | |
| ADAMzap Soft. | 1986 to 1989 (4 years) |
| Adban de Corcy | 2000 to 2002 (3 years) |
| ADC [Advanced Digital Corp.] | 1983 (1 year) |
| Adcock, T.J. | 1985 (1 year) |
| Adcom Electron [Japan] | |
| Add On Electronics, Ltd. | 1983 to 1984 (2 years) |
| Addcom Electronics | 1981 (1 year) |
| ADDE Marketing [France] | 1983 (1 year) |
| Addex [France] | |
| Addicting Games, Inc. | |
| Addictive Games [Prism Leisure div.] | 1981 to 1993 (13 years) |
| Addison-Wesley Publishing Co., Inc. | 1982 to 1990 (9 years) |
| ADDS [Applied Digital Data Systems] | 1982 to 1985 (4 years) |
| Addtech Research, Inc. | |
| ADE Automaten-Fabrik G.m.b.H. [Berlin, Germany] | 1929 (1 year) |
| Adeline Soft. International | 1996 (1 year) |
| ADELL Trading a.s. | 2011 (1 year) |
| Adelphi Mfg. [London, England] | 1935 (1 year) |
| Adelso, Steve | 1984 (1 year) |
| ADI [Accord Data International] | 1983 (1 year) |
| Adickes & Cie., Scott [Paris, France] | 1933 to 1934 (2 years) |
| Adilog [France] | 1984 (1 year) |
| ADK Corp. [Japan] | 1993 to 2002 (10 years) |
| ADM | 1997 (1 year) |
| Admirables | 1994 (1 year) |
| Admiral | 1992 to 1993 (2 years) |
| Admiral Vending | 1961 (1 year) |
| Admirals Srl [Italy] | |
| Adnkronos Libri | 2000 (1 year) |
| Adobe | 1993 to 1998 (6 years) |
| ADP Coin Machine Co. [USA] | |
| ADP Merkur GmbH [Gauselmann Group] [Germany] | 1976 to 2014 (39 years) |
| ADP-Automaten GmbH [Germany] | 1981 to 2000 (20 years) |
| ADR | 1999 (1 year) |
| Adrenalin Ent. | 1998 (1 year) |
| Adrenalin Soft. | 1990 to 1991 (2 years) |
| Adrenalin UK | 1992 to 1994 (3 years) |
| Adrenaline Amusements | 2010 to 2018 (9 years) |
| Adria Gaming [Novomatic Group.] [Rimini, Italy] | 2011 (1 year) |
| Adriatica | |
| ADS Corp. | 1993 (1 year) |
| Adspec Programming | 1990 to 1994 (5 years) |
| ADT | 1992 (1 year) |
| Adult Inn [Japan] | 1987 to 1994 (8 years) |
| Adult Swim Games | 2012 to 2019 (8 years) |
| Adultware | 1988 (1 year) |
| ADV Corp. | |
| Advance [Spain] | 1984 to 1985 (2 years) |
| Advance Automatic Sales Co., Inc. [San Francisco, CA, USA] | 1931 (1 year) |
| Advance Bright, Ltd. | 2000 to 2007 (8 years) |
| Advance Co. [San Francisco, CA, USA] | 1949 (1 year) |
| Advance Electric Co. [Los Angeles, CA, USA] | 1938 (1 year) |
| Advance Machine Co. [Chicago, IL, USA] | 1901 to 1936 (36 years) |
| Advance Radio Co. [Indianapolis, IN, USA] | 1929 (1 year) |
| Advance Soft. Promotions | 1986 to 1987 (2 years) |
| Advanced Adventure Creations [Spain] | 1990 to 1992 (3 years) |
| Advanced Computer Ent. | 1983 to 1989 (7 years) |
| Advanced Computer Products, Ltd. | 1985 to 1987 (3 years) |
| Advanced Digital Devices, Ltd. [UK] | 1992 to 1993 (2 years) |
| Advanced Digital Systems Group | 1998 (1 year) |
| Advanced Game Concepts, Inc. | |
| Advanced Game Engineering | |
| Advanced Gravis | 1991 to 1995 (5 years) |
| Advanced Handicapping Technologies, Inc. | 1994 (1 year) |
| Advanced Ideas, Inc. | 1982 to 1990 (9 years) |
| Advanced Memory Systems, Ltd. | 1983 to 1987 (5 years) |
| Advanced Operating Systems | 1980 to 1981 (2 years) |
| Advanced Productions | 1995 to 1996 (2 years) |
| Advanced Programmers | 1990 (1 year) |
| Advanced Safety Devices, LLC. [Chatsworth, CA, USA] | |
| Advanced Soft. Promotions | 1987 (1 year) |
| Advanced Soft. PTY, Ltd. | |
| Advanced Video Technology | 1985 to 1989 (5 years) |
| Advantage | 1985 (1 year) |
| Advantage Plus Dist., Inc. | 1994 (1 year) |
| Adventions | 1993 (1 year) |
| Adventuras AD [Spain] | 1990 to 1992 (3 years) |
| Adventure Club, The | 1990 (1 year) |
| Adventure International [Scott Adams div.] | 1978 to 1997 (20 years) |
| Adventure Probe Soft. | 1986 to 2003 (18 years) |
| Adventure Soft., Ltd. | 1985 to 2009 (25 years) |
| Adventure Workshop, The | 1985 to 1996 (12 years) |
| Advision | 1983 (1 year) |
| AE Associates | |
| AEA | 1979 to 1984 (6 years) |
| AEG Olympia | 1980 (1 year) |
| Aegis | 1985 to 1992 (8 years) |
| AEK Crackware | 1986 to 1987 (2 years) |
| Aeon Flame | 2003 (1 year) |
| Aerocraft Co. [Chicago, IL, USA] | |
| Aerosoft GmbH | 2019 (1 year) |
| Afabear Soft. | 1983 (1 year) |
| AFC | 1986 (1 year) |
| Afega | 1994 to 2001 (8 years) |
| Affable Games | 2020 (1 year) |
| Affect | 1998 to 2002 (5 years) |
| AFL [Association Francaise pour la Lecture] [France] | 1984 to 1988 (5 years) |
| Afterburn | 2019 (1 year) |
| AG Corp. | |
| AG Soft | 1990 (1 year) |
| Again Again | 1988 to 1990 (3 years) |
| Agamco, Inc. [Novi, MI, USA] | |
| Agat [Russia] | 1983 to 1986 (4 years) |
| Agatsuma Ent. | 2004 to 2010 (7 years) |
| AGCI [American Game Cartridges, Inc.] [USA] | 1990 (1 year) |
| Agency Automation | 1985 to 1987 (3 years) |
| Ager-Bureautique [Viroflay, France] | 1982 (1 year) |
| Agetec, Inc. [Sunnyvale, CA, USA] | 1998 to 2015 (18 years) |
| AGF Hardware | 1982 to 1986 (5 years) |
| Aggressive | |
| AGI [Austrian Gaming Industries] [Novomatic Group] | 1990 to 2014 (25 years) |
| Agilar | 1990 to 1991 (2 years) |
| Agile | 1988 to 1989 (2 years) |
| AGM Playism | 2012 to 2018 (7 years) |
| AGMN Co., Ltd. [Korea] | 2002 to 2004 (3 years) |
| Agner & Bushman | 1910 (1 year) |
| AGO [Orleans, France] | 1982 (1 year) |
| Agony | 1993 to 1996 (4 years) |
| Agridisp [France] | |
| AGS [A.G.Soft.] | |
| AGS [American Gaming Systems] | 2009 to 2014 (6 years) |
| AGT [Advanced Games Technology] [Taiwan] | 2010 (1 year) |
| AGT, Inc. [Apollon Global Technologies] [CA, USA] | 2009 (1 year) |
| Aguafresh | 2004 (1 year) |
| Aguipa | 1982 (1 year) |
| Agumix [Japan] | 1987 to 1996 (10 years) |
| AHAFA-Reinecke & Co. | 1930 (1 year) |
| Ahl & Cole | 1973 (1 year) |
| Ahl & North | 1970 (1 year) |
| Ahl, David | 1973 (1 year) |
| Ahoy!-Ion International | 1984 to 1987 (4 years) |
| Ahrens, Ltd., Chas. [London, England] | 1920 to 1934 (15 years) |
| AHS [Japan] | 1990 (1 year) |
| AI Soft | 1994 (1 year) |
| AI Solve | 2019 (1 year) |
| AIA | 2001 to 2004 (4 years) |
| Aic [Taiwan] | |
| AIC Spirits [Japan] | 1995 to 1996 (2 years) |
| Aicom Co., Ltd. | 1994 to 1996 (3 years) |
| Aicom Corp. [Japan] | 1989 (1 year) |
| Aidonis Games | |
| Aigaareba Daijoubu | 1996 (1 year) |
| Aihara, Takafumi | 1986 (1 year) |
| AIK d.o.o. [Kozina, Slovenia] | |
| Aiky | 2003 (1 year) |
| AIL [Japan] | 1994 to 1997 (4 years) |
| Aim Soft. | |
| AIM Technology | 2003 (1 year) |
| AIMS Multimedia | 1995 to 1996 (2 years) |
| Aincar [Spain] | 1982 (1 year) |
| Ainley, F.O. | 1982 (1 year) |
| Ainsworth Co., Len H. | 1956 to 1958 (3 years) |
| Ainsworth Consolidated Industries Pty., Ltd. [Sydney, Australia] | 1959 to 1986 (28 years) |
| Ainsworth Dental Supply | 1953 to 1954 (2 years) |
| Ainsworth Game Technology, Ltd. | 2004 to 2015 (12 years) |
| Ainsworth Nominees P.L. | 1986 (1 year) |
| Aion [Japan] | 1991 (1 year) |
| Air Combat School | |
| Aircraft Engineering Co. | 1946 (1 year) |
| Aireon Mfg. Corp. [Kansas City, MO, USA] | 1946 to 1949 (4 years) |
| Airline Soft. | |
| Airvox Radio Co. [Santa Cruz, CA, USA] | 1947 (1 year) |
| Airwolf-Team | 1990 to 1995 (6 years) |
| Aisch & Melchers | 1960 to 1971 (12 years) |
| Aisel [Japan] | 1987 to 1989 (3 years) |
| AIWA | 1987 to 1994 (8 years) |
| AJ Vision | 1983 (1 year) |
| AJA Soft. | 1978 (1 year) |
| Ajax | |
| Ajax Distributing Co. [Newark, NJ, USA] | 1947 (1 year) |
| Ajinomoto | 1993 (1 year) |
| AJM Soft. | 1987 to 1992 (6 years) |
| AJS Soft. | 1984 (1 year) |
| Ak Tronic Soft. & Services GmbH | 2000 to 2010 (11 years) |
| Akai | 1994 (1 year) |
| Akaoni Studio | |
| Akella | 2015 to 2017 (3 years) |
| Akesson, Linus | 2009 (1 year) |
| Akhter | |
| Aki | 1997 to 2000 (4 years) |
| Akira Corp. | 1997 (1 year) |
| Akom | 1988 (1 year) |
| Aksys Games Localization, Inc. | 2009 to 2020 (12 years) |
| AKT Corp. | 1992 (1 year) |
| Akupara Games | 2016 to 2019 (4 years) |
| AL [Associated Leisure Sales] | |
| Al Alamiah | 1984 to 1990 (7 years) |
| Al Rushaid | 1983 (1 year) |
| ALA Soft. | 1983 to 1984 (2 years) |
| Alamo Novelty Co. [San Antonio, TX, USA] | 1930 to 1931 (2 years) |
| Alan's Recordings | |
| Alans Health-Care Products Co., Ltd. [Beijing, China] | |
| Alaris | |
| Alawar Ent. | 2017 to 2019 (3 years) |
| Alb Co. [Belleville, IL, USA] | 1927 (1 year) |
| Alba [Japan] | 1985 to 1991 (7 years) |
| Alba Arcade | 2010 to 2022 (13 years) |
| Alball Mfg. Co. [Brooklyn, NY, USA] | 1912 (1 year) |
| Albany Hill Info Systems | |
| Albany Novelty Works [Albany, NY, USA] | 1893 to 1899 (7 years) |
| Albatross | |
| Alben [France] | 1957 to 1964 (8 years) |
| Albert Computers, Inc. | 1984 (1 year) |
| Albion Crew | 1993 to 2001 (9 years) |
| Albrecht & Ullman | 1972 (1 year) |
| Albrecht, Alvin | 2003 (1 year) |
| Albrecht, Mario | 1994 (1 year) |
| Alca Electronics, Ltd. [England] | 1976 to 1981 (6 years) |
| Alcatel | 1984 to 1991 (8 years) |
| Alchemist Co., Ltd. [Japan] | 1999 to 2015 (17 years) |
| Alchemist Research | |
| Alchemist Soft. | 1990 (1 year) |
| Alco [France] | |
| Alco-Checkpoint [San Diego, CA, USA] | 2007 (1 year) |
| Alco-Deree Co. [Chicago, IL, USA] | |
| Alcoholics | 1989 to 1991 (3 years) |
| Alcor Group, Inc., The | 1992 (1 year) |
| Alcor Systems | 1982 (1 year) |
| Ald, Inc. [Chicago, IL, USA] | |
| Alda Games | 2013 to 2020 (8 years) |
| Alder-Soft. | 1989 (1 year) |
| Alderan | 1996 (1 year) |
| Aldo | |
| Aldoda International | 1986 to 1987 (2 years) |
| Aldridge, Ian | 1991 (1 year) |
| Aldridge, Nick | 2000 to 2003 (4 years) |
| Aldus | 1993 (1 year) |
| Alea [Spain] | 1986 (1 year) |
| Alesis | 1987 to 1996 (10 years) |
| Alessandrini, Michele | 1991 to 2002 (12 years) |
| Alexander Mfg. Co., The [Hamilton, OH, USA] | |
| Alexander, Mark | 1987 (1 year) |
| ALF Products, Inc. | 1976 (1 year) |
| Alfa Soft. | 1987 to 1989 (3 years) |
| Alfa System | 2001 to 2005 (5 years) |
| Alfa Tech Srl. [Italy] | 2009 (1 year) |
| Alfastreet [Sežana, Slovenia] | |
| Alfille & Gorback & Tanaka | 1977 (1 year) |
| Alfille, Paul | 1978 (1 year) |
| Alfo Soft. | 1989 (1 year) |
| Alfred Publishing Co. | 1985 to 1986 (2 years) |
| ALG [Russia] | 1988 (1 year) |
| Algo Soft. [Japan] | 1989 (1 year) |
| Algolab [Japan] | 1994 to 1995 (2 years) |
| Algorithme [France] | 1984 (1 year) |
| Algotek | 1983 (1 year) |
| Algray Soft. | 1982 to 1984 (3 years) |
| Alias|Wavefront, Inc. | 1996 to 1999 (4 years) |
| Alice Dreams | 2006 to 2017 (12 years) |
| Alicesoft [Japan] | 1989 to 2019 (31 years) |
| Alien Nation | 1996 to 1997 (2 years) |
| Alinea Computer | 2006 to 2007 (2 years) |
| Alive | 1997 to 1999 (3 years) |
| Alive Soft. | 1989 to 1991 (3 years) |
| Alivers | 1997 to 2002 (6 years) |
| ALIWE-Soft. | 1988 (1 year) |
| Alkuno & Co. [New York, NY, USA] | 1947 to 1949 (3 years) |
| All American Games Co. [USA] | 1986 (1 year) |
| All In! Games | 2020 (1 year) |
| All Micros's Uruguay | 1988 (1 year) |
| All Sports Arena Amusements, Inc. | 2003 (1 year) |
| All-In Co., Ltd. [China] | 2002 (1 year) |
| All-In Electronic | 1999 (1 year) |
| All-In-One Co. [MO, USA] | 1914 (1 year) |
| All-Tech Industries, Inc. [ATI] [Hialeah, FL, USA] | 1961 to 1967 (7 years) |
| Allais, M. [France] | 1932 (1 year) |
| Allan, Simon | 2006 to 2008 (3 years) |
| Allanson Computing | 1984 to 1985 (2 years) |
| Allen, Jeff | 1984 (1 year) |
| Allen, Larry | |
| Allex [Japan] | 1992 to 1994 (3 years) |
| Alley, Andrew | |
| Alliance, The | 1989 to 1992 (4 years) |
| Allied Amusement Co. [USA] | |
| Allied Creative Engineers | 1989 (1 year) |
| Allied Leisure Industries, Inc. [Hialeah, FL, USA] | 1969 to 1979 (11 years) |
| Alligata Soft. | 1983 to 1989 (7 years) |
| Alligator Soft. | 1994 (1 year) |
| Allin, Samuel S. [London, England] | 1888 (1 year) |
| Allite Mfg. Co., Inc. [Los Angeles, CA, USA] | 1947 (1 year) |
| Allié, G. [France] | 1905 (1 year) |
| Allot [Japan] | 1991 (1 year) |
| Allstar Vending [Québec, Canada] | |
| Allswell Mfg. Co. | |
| Alltronics | 1980 (1 year) |
| Allumer, Ltd. | 1991 to 1996 (6 years) |
| Allwood, Philip | 1988 (1 year) |
| Alma Scop [Grenoble, France] | 1982 (1 year) |
| Almathera Poland | 1995 (1 year) |
| Almathera Systems, Ltd. [UK] | 1992 to 1996 (5 years) |
| Almost Human | 2012 to 2014 (3 years) |
| Almost No Copyrights | 1988 (1 year) |
| Almqvist & Wiksell | 1987 to 1988 (2 years) |
| Almy Mfg. Co. [IL, USA] | 1915 (1 year) |
| Alpesoft | 1986 (1 year) |
| Alpha Co. | 1995 to 1996 (2 years) |
| Alpha Denshi Co., Ltd. [ren. ADK in 1993] [Japan] | 1980 to 1992 (13 years) |
| Alpha Flight 1970 | 1985 to 1999 (15 years) |
| Alpha Logic Business Systems | 1986 (1 year) |
| Alpha Micro | 1988 (1 year) |
| Alpha Omega Soft. | |
| Alpha Soft. | 1984 to 1986 (3 years) |
| Alpha Systems | 1988 (1 year) |
| Alpha Systems [Grenoble, France] | 1981 to 1982 (2 years) |
| Alpha Unit | 2002 (1 year) |
| Alpha-Omega Soft., Ltd. | 1985 to 1986 (2 years) |
| Alphabatim | 1985 (1 year) |
| AlphaDream Corp. [Japan] | 2001 (1 year) |
| AlphaSmart, LLC | 2005 (1 year) |
| Alphasoft | 1983 (1 year) |
| Alpine Soft. | 1987 to 1994 (8 years) |
| Alps Electric | 1994 (1 year) |
| Alro Soft. | 1988 (1 year) |
| Alstate Group, Inc. [Henderson, NV, USA] | 1982 (1 year) |
| Alsthom Atlantique | |
| Alta [Japan] | 1994 to 2008 (15 years) |
| Altacia [Japan] | 1993 to 1995 (3 years) |
| Altair Soft. Distribution Co. | 1975 to 1977 (3 years) |
| Altare Advanced Technologies | 1995 (1 year) |
| Altec Mfg., Inc. [Reno, NV, USA] | |
| Alternate Worlds Technology | 1993 (1 year) |
| Alternative Engineering | 1981 to 1983 (3 years) |
| Alternative Soft., Ltd. | 1984 to 1995 (12 years) |
| Althi | 2011 to 2018 (8 years) |
| Altic | 1982 (1 year) |
| Altos Computer Systems | 1981 to 1984 (4 years) |
| Altra Roms | 1984 to 1987 (4 years) |
| Altron Corp. | 1991 to 2002 (12 years) |
| Altwasser, Richard Francis | 1982 (1 year) |
| Alvin G. & Co. [Melrose Park, IL, USA] | 1991 to 1993 (3 years) |
| AM | |
| AM Co. | |
| Am-Tec | 1983 (1 year) |
| AM. Prg [Korea] | 2001 (1 year) |
| Amajeto | |
| Amalgamated Business Systems | |
| Amalgamated Ent., Inc. [CA, USA] | 1975 (1 year) |
| Amanita Design | 2012 to 2018 (7 years) |
| Amanotes | 2017 to 2019 (3 years) |
| Amatic Industries [Austria] | 2000 to 2012 (13 years) |
| Amatic Trading | 1993 to 2000 (8 years) |
| Amaze Ent. | 2003 to 2006 (4 years) |
| Amazing Group!, The | 1995 to 1997 (3 years) |
| AmaZon Game Machine Production | 2005 (1 year) |
| Amazon Systems | 1984 (1 year) |
| Amba Soft. | 1982 to 1983 (2 years) |
| Ambassador, Inc. [Kansas City, MO, USA] | 1948 (1 year) |
| Ambitious [Japan] | 1993 to 1994 (2 years) |
| Amco co., Ltd. | 1975 (1 year) |
| AMCO Music [New Zealand] | |
| Amcoe, Inc. [USA] | 1996 to 2010 (15 years) |
| Amcom | 1986 (1 year) |
| AMD [Advanced Micro Devices] | |
| AMD SRL | |
| Amedio | 2002 to 2007 (6 years) |
| Amenip | 1981 (1 year) |
| Ameri | 1989 (1 year) |
| America Online | 1994 to 1996 (3 years) |
| American Action AB | 1986 to 1987 (2 years) |
| American Adjustomatic Corp. [Portsmouth, OH, USA] | |
| American Airdry Corp. [Detroit, MI, USA] | 1928 (1 year) |
| American Alpha, Inc. [Monmouth Junction, NJ, USA] | 1995 to 2007 (13 years) |
| American Amusement Co. | 1947 (1 year) |
| American Auto-Dispensers, Inc. [Cleveland, OH, USA] | 1931 (1 year) |
| American Automatic Banjo Co. [NJ, USA] | 1900 (1 year) |
| American Automatic Machine Co. [NY, USA] | 1892 to 1897 (6 years) |
| American Automatic Vending Machine Mfg. Co. [New York, NY, USA] | 1888 (1 year) |
| American Automatics [NY, USA] | 1944 (1 year) |
| American Automusic Co. | 1896 (1 year) |
| American Banking Machine Corp. [NY, USA] | 1918 (1 year) |
| American Cigar Vender Co. [Chicago, IL, USA] | 1890 (1 year) |
| American Databankers Corp. [OK, USA] | 1994 (1 year) |
| American Eagle Soft., Inc. | 1984 to 1985 (2 years) |
| American Educational Computer, Inc. | 1982 to 1988 (7 years) |
| American Game Factory, Inc., The | 2008 (1 year) |
| American Games Engineering Co. | |
| American Graphophone Co. [Washington, DC, USA] | |
| American Gripmeter Co., Inc. [Long Island, NY, USA] | 1947 (1 year) |
| American Guidance Service | 1985 (1 year) |
| American Institute for Professional Education | 1977 (1 year) |
| American Language Academy | 1987 (1 year) |
| American Laser Games, Inc. [Albuquerque, NM, USA] | 1990 to 1995 (6 years) |
| American Lens & Photo Co. [Chicago, IL, USA] | 1954 (1 year) |
| American Locker Co., Inc. [Boston, MS, USA] | |
| American Machine & Foundry Co. [Westbury, NY, USA] | 1961 to 1967 (7 years) |
| American Management Association | 1957 (1 year) |
| American Mechanical Toy Co. [New York, NY, USA] | 1888 (1 year) |
| American Meter Co. | |
| American Mfg. & Sales Co. [OR, USA] | 1934 (1 year) |
| American Mills & Mfg. Co. | |
| American Multiple Industries | |
| American Mutoscope Co. [New York, NY, USA] | 1900 to 1910 (11 years) |
| American National Dispensing Co., Inc. [ANDICO] [Lansdale, PA, USA] | |
| American News Paper Distributing Co. [Cincinnati, OH, USA] | 1903 (1 year) |
| American Novelty Co. [OH, USA] | 1894 to 1908 (15 years) |
| American Paper Goods Co., The [Chicago, IL, USA] | 1929 (1 year) |
| American Prod. Co. | 1941 (1 year) |
| American Radio Laboratories [Chicago, IL, USA] | 1929 to 1930 (2 years) |
| American Sales Co. [Chicago, IL, USA] | 1927 to 1929 (3 years) |
| American Sales Co. [MO, USA] | 1938 (1 year) |
| American Sammy Corp. [Torrance, CA, USA] | 1988 to 2002 (15 years) |
| American Scale Mfg. Co. [Washington, DC, USA] | 1946 to 1968 (23 years) |
| American Shuffleboard Co. [Union City, NJ, USA] | 1954 to 1970 (17 years) |
| American Softworks Corp. | 1991 to 1998 (8 years) |
| American Specialty Mfg. Co. [NY, USA] | 1896 (1 year) |
| American Stamp & Novelty Mfg. Co. [Oklahoma City, OK, USA] | 1944 (1 year) |
| American Technos | 1990 to 1996 (7 years) |
| American Telescope Co. [Evansville, IN, USA] | |
| American Ticket Scale Co. [Chicago, IL, USA] | 1926 to 1928 (3 years) |
| American Vending Corp. [Kansas City, MO, USA] | |
| American Vending Machine Co. | 1903 to 1904 (2 years) |
| American Vending Machine Corp. [Kansas City, MI, USA] | 1933 (1 year) |
| American Vendors, Inc. [Los Angeles, CA, USA] | 1947 to 1949 (3 years) |
| American Video Ent. | 1989 to 1993 (5 years) |
| American Videogame | 1986 (1 year) |
| Americana Project [Galatina, Italy] | |
| Americana Soft. | 1984 to 1990 (7 years) |
| Americoin [Electri-Wire Corp. div.] [Milwaukee, WI, USA] | 1975 to 1977 (3 years) |
| Amero Shuffleboard Co. [Chicago, IL, USA] | 1949 (1 year) |
| Amersoft | 1984 to 1985 (2 years) |
| Amet, Edward H. [Chicago, IL, USA] | 1888 to 1889 (2 years) |
| AMF [Mechanicsville, VA, USA] | |
| Amfas Computer Soft., Ltd. | 1990 (1 year) |
| AMG | 1987 (1 year) |
| AMI [American Megatrends, Inc.] | |
| AMI [Automatic Musical Instruments] [Grand Rapids, MI, USA] | 1927 to 2007 (81 years) |
| AMI [Torino, Italy] | 1975 to 1977 (3 years) |
| Amico Electronics | 1980 (1 year) |
| Amiga Corp. [Santa Clara, CA, USA] | 1983 to 1984 (2 years) |
| Amiga E PD | |
| Amiga Fun | 1990 to 1991 (2 years) |
| Amiga Library Services | 1993 to 1995 (3 years) |
| Amiga Mania | 1992 (1 year) |
| Amiga Special Media GmbH | 1991 (1 year) |
| Amigastore | 2020 (1 year) |
| Amigogame [Korea] | 2002 to 2004 (3 years) |
| Amitech Denmark | |
| Amitek | 1993 (1 year) |
| Amity-Mfg. Corp. [Perth Amboy, NJ, USA] | |
| Amoeba Soft. | 1983 (1 year) |
| Amok | 1989 to 1990 (2 years) |
| AMOK [Amiga Modula & Oberon Klub] [Stuttgart, Germany] | |
| Amore, Gabriele | 2013 to 2016 (4 years) |
| Amorphis | 1995 to 2003 (9 years) |
| Amorphous [Japan] | 1989 to 1993 (5 years) |
| AMOS PD | |
| AMP [France] | 1935 (1 year) |
| Ampalsoft [TM of Ampal Computer Services] | 1983 to 1984 (2 years) |
| Ampex Corp. | 1980 to 1988 (9 years) |
| AMPLE Information Exchange | 1987 to 1992 (6 years) |
| Ample Soft. | 1983 (1 year) |
| Ampro | 1980 to 1989 (10 years) |
| Ampro Computers | 1985 (1 year) |
| AMR [Japan] | 1989 (1 year) |
| AMR-Soft | 1983 (1 year) |
| Amrac | 1987 (1 year) |
| AMS [Amusement Machines Service SRL] | |
| Amsat-UK Soft. Service | |
| Amsing-Mag | 1989 to 1990 (2 years) |
| Amsoft | 1984 to 1988 (5 years) |
| Amstar Electronics Corp. [Phoenix, AZ, USA] | 1980 to 1990 (11 years) |
| Amstrad Accion | 1987 (1 year) |
| Amstrad Adventure PD Library | 1990 (1 year) |
| Amstrad Consumer Electronics | 1985 (1 year) |
| Amstrad Games | 1987 (1 year) |
| Amstrad PLC | 1984 to 1995 (12 years) |
| Amstrad Video-Play | 1987 (1 year) |
| AMT Co., Ltd | 1991 to 1992 (2 years) |
| AMT Savan Corp. | 1995 (1 year) |
| Amtec [Amusement Technology] [Italy] | 1980 (1 year) |
| Amtex Soft. Corp. [Canada] | 1992 (1 year) |
| Amusco | 1987 (1 year) |
| Amuse [Japan] | 1993 to 1996 (4 years) |
| Amuse World Corp. [Seoul, Korea] | 1998 to 2020 (23 years) |
| Amusematic Corp. [Chicago, IL, USA] | 1946 to 1947 (2 years) |
| Amusement [Japan] | 1990 (1 year) |
| Amusement Coin Machine Mfg. Co. [Pittsburgh, PA, USA] | 1933 (1 year) |
| Amusement Corp. of America | |
| Amusement Device & Design Co. [USA] | |
| Amusement Engineering | 1968 (1 year) |
| Amusement Enterprises [TX, USA] | 1946 to 1947 (2 years) |
| Amusement Enterprises, Inc. [New York, NY, USA] | 1946 to 1947 (2 years) |
| Amusement Game | 2002 (1 year) |
| Amusement Machine [UK] | |
| Amusement Machine Co. [New York, NY, USA] | 1890 to 1894 (5 years) |
| Amusement Machine Co. [Rochester, NY, USA] | 1895 (1 year) |
| Amusement Machine Corp. of America [Los Angeles, CA, USA] | 1929 (1 year) |
| Amusement Machine Corp., Ltd. [Los Angeles, CA, USA] | 1931 (1 year) |
| Amusement Makers | 1996 to 1998 (3 years) |
| Amusement Novelty Co. [OH, USA] | 1931 (1 year) |
| Amusement Products Corp. [NJ, USA] | 1932 (1 year) |
| Amusement Specialties, Inc. [Brooklyn, NY, USA] | 1943 (1 year) |
| Amusement Systems Corp. [ASC] [Cape Canaveral, FL, USA] | 1979 (1 year) |
| Amusement Technology [Asbury Park, NJ, USA] | 1976 (1 year) |
| Amusement World | 1981 (1 year) |
| AmuseTec S.L. [Spain] | |
| Amusitronix | 1994 (1 year) |
| Amutec | 1987 to 2001 (15 years) |
| Amutech, Ltd. [Amusement Technology] [San Rafael, CA, USA] | 1977 (1 year) |
| Amutron [Netherlands] | |
| Amutronics, Inc. [Cherry Hill, NJ, USA] | 1972 to 1973 (2 years) |
| Amutronics, Inc. [Troy, NY, USA] | |
| Amuzy [Japan] | 2005 to 2013 (9 years) |
| AMX | |
| An-soft [Japan] | 1993 (1 year) |
| Analgesic Productions, LLC | 2013 to 2019 (7 years) |
| ANALOG Computing | 1980 to 1989 (10 years) |
| Analog Soft. | 1981 (1 year) |
| Analogic Corp. | |
| Analogy [Spain] | 1995 to 1997 (3 years) |
| Anarchy | 1990 to 1993 (4 years) |
| Anatrol Corp. | |
| Anaya Multimedia | 1985 to 1986 (2 years) |
| Anchor Automation | 1986 (1 year) |
| Ancient Corp. | 2017 (1 year) |
| Ancient Temple, The | 1988 to 1993 (6 years) |
| Anco Soft., Ltd. | 1983 to 2000 (18 years) |
| Andamiro Co., Ltd. | 1999 to 2021 (23 years) |
| Anderson & Barban & Thompson | 1984 (1 year) |
| Anderson Die & Model Co. [Anderson, IN, USA] | |
| Anderson, Craig | 1980 (1 year) |
| Anderson, John | 1981 (1 year) |
| Anderson, Margaret | 1986 to 1992 (7 years) |
| Anderson, Margaret & Ann | 1986 (1 year) |
| Anderson, R.S. | 1990 (1 year) |
| Ando | |
| Andon, Mick | |
| Andrews & Co. [Chicago, IL, USA] | |
| Andries Robert Automatic S.p.r.l. [Brussels, Belgium] | |
| Andromeda Soft. | 1984 to 1988 (5 years) |
| ANES | 1997 to 2002 (6 years) |
| ANG Soft. | 1991 to 1994 (4 years) |
| Ange [Japan] | 1991 to 1996 (6 years) |
| Angel [Japan] | 1988 to 1997 (10 years) |
| Angel Dust [Japan] | 1990 (1 year) |
| Angel Soft | |
| Angel Studios | 1990 to 1995 (6 years) |
| Angelique, A. [Juvisy-sur-Orge, France] | 1895 (1 year) |
| Angels | 1997 to 2005 (9 years) |
| Angier Akers & Co. [England] | 1954 (1 year) |
| Anglosoft | 1986 (1 year) |
| Angry Demon Studio | 2019 (1 year) |
| Angstrem | 1989 (1 year) |
| Anik Microsystems | 1983 (1 year) |
| Anima Scientific Computing | 1986 (1 year) |
| Animagic [Spain] | 1989 to 1990 (2 years) |
| Animal Behavior Enterprises, Inc. [Hot Springs, AR, USA] | |
| Animal Mine | 1991 to 1996 (6 years) |
| Animal Soft | 1992 (1 year) |
| Animasia | 1994 (1 year) |
| Animated Amusements | 1970 (1 year) |
| Animated Pixels | 1990 to 1991 (2 years) |
| Anime TEC | 1989 (1 year) |
| Anirog Soft. | 1983 to 1985 (3 years) |
| Anisoptera Games | 2019 (1 year) |
| Anitek Soft. Products | 1982 (1 year) |
| Anjin [Japan] | 1995 to 1998 (4 years) |
| Anker-Werke A.-G. [Bielefeld, Germany] | |
| Ankoku Baitai Soft. House | 1989 to 1991 (3 years) |
| Ann Arbor | 1981 (1 year) |
| Annandule Project | 1990 to 1992 (3 years) |
| Annapurna Interactive | 2020 (1 year) |
| ANS Consultants | 1989 to 1990 (2 years) |
| Ansible Information | 1985 (1 year) |
| Answare [Paris, France] | 1982 to 1985 (4 years) |
| Answer [Japan] | |
| Antares Virtual Reality Systems | 1995 (1 year) |
| Anteco Soft. | 1982 to 1983 (2 years) |
| Anteta | |
| Anthony Cigar Co. [OH, USA] | 1892 (1 year) |
| Anthony Liquid Vending Machine Co. [St. Paul, MN, USA] | 1922 (1 year) |
| Anti Design | 1993 (1 year) |
| Antic | 1990 to 2004 (15 years) |
| ANTIC Publishing | 1981 to 1989 (9 years) |
| Antic Soft. [Czech Rep.] | 1989 (1 year) |
| Antifaz & the Dog | 1989 (1 year) |
| Antinomia | 1995 (1 year) |
| Antinos Records, Inc. [Japan] | 1996 (1 year) |
| Antique Apparatus, The [Sherman Oaks, CA, USA] | 1985 (1 year) |
| Antique Slot Machine Part Co. [Carpentersville, IL, USA] | 1996 (1 year) |
| Antiram | |
| Antirom | 1982 to 1986 (5 years) |
| Antoine | 1998 (1 year) |
| Anubis Soft. | 1984 to 1985 (2 years) |
| ANWUC | 1986 (1 year) |
| Any Channel Inc. | 1995 (1 year) |
| Apache Soft., Ltd. | 1994 (1 year) |
| APC & TCP | 1992 to 2000 (9 years) |
| APDI [Paris, France] | 1982 (1 year) |
| Ape Soft. | 1985 to 1986 (2 years) |
| Apex Amusement Machine Co. | |
| Apex Amusements [Australia] | 1949 to 1959 (11 years) |
| Apex Developments | 1993 (1 year) |
| Apex Gaming Technology GmbH [Austria] | |
| Apex Trading, Ltd. | 1982 to 1983 (2 years) |
| APF Electronics, Inc. | 1976 to 1980 (5 years) |
| APG | 1995 (1 year) |
| APH Corp. | |
| Apidya | 1996 to 2008 (13 years) |
| Apies [Japan] | 2009 (1 year) |
| Apisz [Hungary] | |
| Aplix Corp. [Japan] | 1997 (1 year) |
| Apocalypse | |
| Apocalypse Soft. | 1983 (1 year) |
| Apogee Soft. | 1988 to 2014 (27 years) |
| Apollo 7 | 1984 (1 year) |
| Apollo Computer | 1988 to 1992 (5 years) |
| Apollo Soft. | 1982 (1 year) |
| Apollo Technica [Japan] | 1982 to 1986 (5 years) |
| Apollo, Inc. [Richardson, TX, USA] | 1981 to 1983 (3 years) |
| Apolo, Inc. | 1983 (1 year) |
| Apparate Bauanstalt Bavaria | 1900 (1 year) |
| Apple [Japan] | 1983 to 1993 (11 years) |
| Apple Chemical Soft. | 1988 to 1989 (2 years) |
| Apple Computer, Inc. | 1976 to 1998 (23 years) |
| Apple Industries, Inc. [Baychester, NY, USA] | 1998 to 2010 (13 years) |
| Apple Pie [Japan] | 1992 to 1996 (5 years) |
| Apple Pugetsound Program Library Exchange | 1978 to 1982 (5 years) |
| Apple Seedrin [Les Ulis, France] | 1982 to 1984 (3 years) |
| Apple Soft. [Japan] | 1989 to 1990 (2 years) |
| Apple Time [Italy] | 1987 (1 year) |
| Apple, Inc. [USA] | 2007 (1 year) |
| Appleby Associates | 1986 (1 year) |
| Applecart Programs for Education | 1981 (1 year) |
| Applications Soft. Specialities | 1983 to 1984 (2 years) |
| Applied Concepts, Inc. | 1978 to 1980 (3 years) |
| Applied Microcomputer Systems | 1977 to 1988 (12 years) |
| Applied Optical Media Corp. | 1991 to 1993 (3 years) |
| Applied Real Time Systems | 1983 (1 year) |
| Applied Soft. | 1987 (1 year) |
| Applied Soft. Solutions | 1995 (1 year) |
| Applied Technology Microworld | 2015 (1 year) |
| Applied Technology Pty., Ltd. | 1976 to 1987 (12 years) |
| Apricot [Japan] | |
| Apricot Computer, Ltd. | 1987 to 1993 (7 years) |
| Apricote Studios | 1994 (1 year) |
| Aproman [Korea] | 1986 to 1989 (4 years) |
| Apropos Technology | 1982 (1 year) |
| Apros | 1992 (1 year) |
| APS [Amiga Public Serie] [Germany] | |
| APT Projects, Ltd. | |
| APX [Atari Program Exchange] | 1979 to 1983 (5 years) |
| AQ Interactive [Japan] | 2006 to 2009 (4 years) |
| AQRS | 1994 (1 year) |
| Aqua Plus [Japan] | 1999 to 2019 (21 years) |
| Aqua Rouge | 1999 to 2001 (3 years) |
| Aqua Systems [Japan] | 2001 (1 year) |
| Aqua Thought | 1994 to 1998 (5 years) |
| Aquarius [Thailand] | |
| Aquarius Edizioni [Italy] | 1983 to 1986 (4 years) |
| Aquarius People Materials, Inc. | 1984 to 1985 (2 years) |
| Aques | 1996 to 1998 (3 years) |
| AR Soft. | 1989 (1 year) |
| Arachnid, Inc. [Rockford, IL, USA] | 1983 to 1999 (17 years) |
| Aragorn | 1987 to 1990 (4 years) |
| Aram | |
| Arax | |
| Arbiter Leisure | 1988 (1 year) |
| ARC [Atari label] | 1986 to 1990 (5 years) |
| ARC [Japan] | |
| Arc Educational Soft. | |
| Arc System Works | 1995 to 2020 (26 years) |
| Arcade | 1984 to 1995 (12 years) |
| Arcade Amusement Co. [Minneapolis, MN, USA] | 1935 (1 year) |
| Arcade Animation | 1983 (1 year) |
| Arcade Crew, The | 2019 to 2020 (2 years) |
| Arcade Games | 1984 to 1985 (2 years) |
| Arcade Masters | 1992 (1 year) |
| Arcade Soft. | 1982 to 1984 (3 years) |
| Arcade Srl [Italy] | 2009 (1 year) |
| Arcade Supply Co. [Chicago, IL, USA] | 1929 (1 year) |
| Arcade Team, The | 1987 (1 year) |
| Arcade Zone, Ltd. | 1994 (1 year) |
| Arcadeaholics, LLC | 2018 (1 year) |
| Arcadia | 1988 (1 year) |
| Arcadia Acoustic Automatics [England] | 1952 (1 year) |
| Arcadia Corp. [USA] | 1982 (1 year) |
| Arcadia Soft., Inc. | 1988 (1 year) |
| Arcadia srl [Italy] | 1985 to 1989 (5 years) |
| Arcadia Systems, Inc. [Mastertronic Group] [Costa Mesa, CA, USA] | 1987 to 1991 (5 years) |
| Arcana Soft. Design | 1986 to 1989 (4 years) |
| Arcane Ent. | 1995 (1 year) |
| Arcanum Computing | 1987 to 1995 (9 years) |
| Arcen Games | 2013 to 2015 (3 years) |
| Archer, Keith | 1982 (1 year) |
| Archibald [UK] | 1899 (1 year) |
| Archimedes World | 1990 to 1995 (6 years) |
| ARCO Publishing | 1984 (1 year) |
| Arco Sales Co. [Philadelphia, PA, USA] | 1942 (1 year) |
| Arcooda, Ltd. | 2016 (1 year) |
| Arcoss | 1993 to 1995 (3 years) |
| ARCsoft Publishers | 1983 (1 year) |
| Arctic Vendor Sales Co., Inc. [Appleton, WI, USA] | 1949 (1 year) |
| ARD [Anderson Research and Design] | 1980 to 1982 (3 years) |
| Arena Ent. [Acclaim div.] | 1991 to 1994 (4 years) |
| Arena Giochi srl [Imola, BO, Italy] | 2010 to 2011 (2 years) |
| Arene [Paris, France] | 1982 (1 year) |
| Arene-Softene [Paris, France] | 1981 (1 year) |
| ARESCO | 1978 to 1979 (2 years) |
| Arfyc | 1984 (1 year) |
| Argent | 1995 to 2008 (14 years) |
| Argo | 1990 (1 year) |
| Argonaut Soft. | 1984 to 1993 (10 years) |
| Argox | 1996 (1 year) |
| Argus | 1934 (1 year) |
| Argus Press Soft., Ltd. [UK] | 1983 to 1988 (6 years) |
| Argus Specialist Publications | 1982 to 1991 (10 years) |
| Argyle Automatic Co. [London, England] | 1908 (1 year) |
| ARIA [Japan] | 2006 (1 year) |
| Aries | 1984 to 1985 (2 years) |
| Aries Technology | 2017 to 2021 (5 years) |
| Arika [Japan] | 1998 to 2019 (22 years) |
| Ariola | |
| Ariola Eurodisc, S.A. | 1985 (1 year) |
| Ariolasoft | 1981 to 1990 (10 years) |
| Aristocrat Automatics, Ltd. [London, England] | 1967 to 1977 (11 years) |
| Aristocrat Leisure Industries Pty, Ltd. | 1985 to 2018 (34 years) |
| Aristocrat Technologies Co., Ltd. [Tokyo, Japan] | 2001 to 2014 (14 years) |
| Arizona Automaton, Inc. [Phoenix, AZ, USA] | 1971 (1 year) |
| ArJay Exports | 1995 (1 year) |
| Arjona, Enrique Soto | 1986 (1 year) |
| Ark Multimedia Publishing | 1992 (1 year) |
| Arkansas Novelty Co. [AR, USA] | 1947 (1 year) |
| Arkeo Soft. | 1992 (1 year) |
| Arkham Products | 1992 to 1998 (7 years) |
| Arkon Automaten | 1980 to 1983 (4 years) |
| Arkos | 1992 to 2008 (17 years) |
| Arlington Heights Machine Works [IL, USA] | 1936 (1 year) |
| Arlington Sales | |
| Armadillo Soft | 1986 (1 year) |
| Armaly Labs | 1995 (1 year) |
| Armati Soft. | 1985 to 1988 (4 years) |
| Armbruster, Frank | 1976 (1 year) |
| Armchair Ent., Ltd. | 1984 (1 year) |
| Armenia, Ltd. | 1981 (1 year) |
| Armitron | 1982 (1 year) |
| Armonk Corp. | 1982 (1 year) |
| Armor Games, Inc. | 2017 to 2019 (3 years) |
| Arnold & Newborn | 1971 to 1978 (8 years) |
| Arnold's Mfg. Co. | |
| Arnold, Ken | 1982 to 1983 (2 years) |
| Arnold, Toni | |
| Arnor, Ltd. | 1985 to 1988 (4 years) |
| Arnpoly | 2015 (1 year) |
| Aroma Co., Ltd. [Japan] | 1997 to 1999 (3 years) |
| Arrington Soft. | 1980 (1 year) |
| Arrow | 1984 to 1985 (2 years) |
| Arrow Micro-Techs | 1992 to 1995 (4 years) |
| Arsenic | 1994 to 1997 (4 years) |
| Arsys Soft., Inc. [Japan] | 1986 to 1993 (8 years) |
| Art & Magic | 1993 to 1999 (7 years) |
| Art [Korea] | 1999 (1 year) |
| Art Design | 1994 to 1997 (4 years) |
| Art Edition | 1988 (1 year) |
| Art of Dreams | 1990 (1 year) |
| Art Spec [Japan] | 1989 (1 year) |
| Artax Games | 2019 (1 year) |
| Artdink Corp. [Japan] | 1985 to 2018 (34 years) |
| Arte | 1996 (1 year) |
| Artec [Japan] | 1988 to 1991 (4 years) |
| Arthur, Frank D. [New York, NY, USA] | 1896 (1 year) |
| Arti Dev., Ltd. | 1989 (1 year) |
| Artic Computing, Ltd. | 1981 to 1986 (6 years) |
| Artic International | 1981 to 1984 (4 years) |
| Artifex Mundi | 2018 to 2019 (2 years) |
| Artifice Studio | 2013 (1 year) |
| Artificial Intelligence Inc. | 1983 (1 year) |
| Artigiana Ricambi | |
| Artists & Creators Guild | |
| Artron | 1981 (1 year) |
| Artronic | 1988 to 1990 (3 years) |
| ArtSci | 1981 to 1984 (4 years) |
| Artworx Soft. Co., Inc. | 1980 to 1990 (11 years) |
| ARUG | |
| Aruze Corp. [Japan] | 1970 to 2009 (40 years) |
| Aruze Gaming America, Inc. [Las Vegas, NV, USA] | 2007 to 2012 (6 years) |
| Arvai, Zoltan | 1989 (1 year) |
| Arxe Systems | 1991 (1 year) |
| Aryxoft | 1986 (1 year) |
| Asahi | |
| Asahi Sangyo Co., Ltd. [Japan] | 1978 (1 year) |
| Asashi Bussan [Japan] | |
| ASC [Answer Soft. Corp.] | 1983 (1 year) |
| ASC Games | 1992 to 1999 (8 years) |
| Ascaron Publishing Soft. | 1999 (1 year) |
| Ascension Designs | 1984 (1 year) |
| ASCI [Association pour les Services Connexes à l'Informatique] [France] | 1990 to 1993 (4 years) |
| ASCII Corp. [Japan] | 1981 to 2001 (21 years) |
| ASCII Ent. Soft., Inc. [USA] | 1992 to 1999 (8 years) |
| ASCII Publishing [Japan] | |
| ASCII Soft. [Japan] | 1999 (1 year) |
| ASCII Something Good Corp. [Japan] | 1997 to 1998 (2 years) |
| Asclepios Soft. | |
| ASCO [Newark, NJ, USA] | 1942 to 1947 (6 years) |
| Ascom [Japan] | |
| Ascom [Swiss] | 1996 (1 year) |
| Ascomoid [Japan] | |
| Ascon Soft. | 1993 to 1994 (2 years) |
| Ascot | |
| Ascraeus | 1996 to 1997 (2 years) |
| Asder Soft. [Taiwan] | 1993 to 2000 (8 years) |
| ASDG | 1987 to 1997 (11 years) |
| ASEL [Italy] | 1978 (1 year) |
| ASELEC | 1984 to 1985 (2 years) |
| ASEM S.p.A. | |
| ASF s.c. | 1991 to 1993 (3 years) |
| ASG | 1996 (1 year) |
| Asgard | 1990 (1 year) |
| Ashlar | 1994 (1 year) |
| Ashley, Allen | 1978 (1 year) |
| Ashton & Wilson | 1984 (1 year) |
| Ashton-Tate | 1982 to 1984 (3 years) |
| Asia Soft Lab | 1997 (1 year) |
| Asica Soft | |
| Asimware Innovations | 1993 to 1999 (7 years) |
| Asirus | 1986 (1 year) |
| ASK Kodansha Co., Ltd. [Japan] | 1990 to 2002 (13 years) |
| ASK, Ltd. [Applied Systems Knowledge] | 1985 to 1987 (3 years) |
| Aska Corp. [Japan] | |
| ASL [Audiogenic Soft., Ltd.] | 1982 to 1996 (15 years) |
| ASL Sales Co. | |
| ASM [Japan] | 1990 (1 year) |
| Asmik Ace Ent., Inc. [Japan] | 1998 to 2012 (15 years) |
| Asmik Co., Ltd. [ren. Asmik Ace in 1998] [Japan] | 1988 to 1997 (10 years) |
| Asmik Corp. of America [USA] | 1990 to 1993 (4 years) |
| Aso Soft [Japan] | |
| ASP | 1988 (1 year) |
| ASP Corp. | 1987 (1 year) |
| ASP Soft. | 1982 to 1984 (3 years) |
| Aspect | 1997 to 2000 (4 years) |
| Aspin & Furry [DE, USA] | 1898 (1 year) |
| Aspirin Machine Corp. [Columbus, OH, USA] | 1931 (1 year) |
| Aspyr | 1998 to 2017 (20 years) |
| ASSA | 1986 (1 year) |
| Assassin Soft. | 1983 to 1984 (2 years) |
| Assassin Time | 1985 (1 year) |
| Assassins, The | 1991 to 1994 (4 years) |
| Assemblage Corp. | 1999 (1 year) |
| Assemble Ent. | 2012 to 2019 (8 years) |
| Assimil | 1985 (1 year) |
| Assist [Japan] | 1990 to 1992 (3 years) |
| Associated Amusements | 1947 (1 year) |
| Associated Distributors [Detroit, MI, USA] | 1933 (1 year) |
| Associated Overseas Mfr. Inc. | 1985 (1 year) |
| Association of Computer Experimenters | 1978 to 1985 (8 years) |
| Association Toolbox [Argenteuil, France] | 1990 to 1991 (2 years) |
| Assogiochi Assago [Italy] | |
| AST System | 1994 to 1995 (2 years) |
| Ast, Hervé [France] | 2005 to 2006 (2 years) |
| Astar International, Inc. | 1980 (1 year) |
| Astec 21 | 1996 to 2000 (5 years) |
| Asteroid Base | 2015 (1 year) |
| Astonsoft | 1985 (1 year) |
| Astor [Florence, Italy] | 1964 (1 year) |
| Astor Soft. [Portugal] | 1984 (1 year) |
| Astor SRL | 2016 (1 year) |
| Astra Automaten | 1930 (1 year) |
| Astra Casino Gaming, Ltd. [Bridgend, Mid Glamorgan UK] | |
| Astra Games, Ltd. [Novomatic Group] [Bridgend, Mid Glamorgan UK] | 1995 to 2014 (20 years) |
| Astragon Ent. | 2013 (1 year) |
| Astral Ent. | 1998 to 2001 (4 years) |
| Astral Soft. | 1986 (1 year) |
| Astralog, Ltd. | |
| Astro Corp. [Taipei, Taiwan] | 1999 to 2011 (13 years) |
| Astro Games | 1979 (1 year) |
| Astro Graphics | 1978 (1 year) |
| Astro Soft. | 1982 to 1983 (2 years) |
| Astro-Tronics, Inc. | |
| Astrocade, Inc. | 1981 to 1985 (5 years) |
| Astroll Co., Ltd. [Japan] | 1998 (1 year) |
| Astrolograph Corp. | |
| Astronut | 1988 to 1989 (2 years) |
| Astropick [Cherry Hill, NJ, USA] | |
| Astros Productions | 1987 to 1988 (2 years) |
| Astrosmurf | 2007 (1 year) |
| Astrovision, Inc. | 1980 to 1981 (2 years) |
| Asus | 1989 to 1995 (7 years) |
| Asylum Ent. | |
| AT&T, Inc. [USA] | 1981 to 1990 (10 years) |
| Ataboy | |
| Atalantis | 1988 (1 year) |
| Atares | 1993 to 1994 (2 years) |
| Atari Age | 1997 to 2020 (24 years) |
| Atari Corp. [CA, USA] | 1984 to 1997 (14 years) |
| Atari Crack Band | 1990 (1 year) |
| Atari Europe S.A.S.U. | 1974 to 2011 (38 years) |
| Atari Games Corp. [CA, USA] | 1984 to 2000 (17 years) |
| Atari Interactive, Inc. | 1997 to 2016 (20 years) |
| Atari Italia S.p.A. | 1985 (1 year) |
| Atari PECF [Creteil, France] | 1980 to 1989 (10 years) |
| Atari Studio | 1988 (1 year) |
| Atari Theater [Paris, France] | 1976 to 1978 (3 years) |
| Atari UK, Ltd. | 1986 to 2003 (18 years) |
| Atari, Inc. [NY, USA] | 2002 to 2013 (12 years) |
| Atari, Inc. [ren. Atari Corp. in 1984] [CA, USA] | 1972 to 1984 (13 years) |
| Atari-Elektronik Vertriebsgesellschaft mhB [Hamburg, Germany] | 1984 to 1985 (2 years) |
| Atariforce | |
| Atarisoft [Atari, Inc.] | 1982 to 1985 (4 years) |
| Atebe | 1936 (1 year) |
| AtGames Digital Media, Inc. | 2009 to 2018 (10 years) |
| Athena / Able | 1993 (1 year) |
| Athena Co., Ltd. [Japan] | 1988 to 2010 (23 years) |
| Athlon Games | 2012 to 2017 (6 years) |
| Atkin & Gorlen | 1968 (1 year) |
| Atkin & Gorlen & Slate | 1969 to 1970 (2 years) |
| Atkin & Slate | 1973 (1 year) |
| Atlantic Soft. [Spain] | 1989 (1 year) |
| Atlantis | 1991 to 1994 (4 years) |
| Atlantis Soft. | 1983 to 1992 (10 years) |
| Atlas [Hungary] | 1987 (1 year) |
| Atlas Adventure Soft. | 1987 to 1988 (2 years) |
| Atlas Games | 1941 to 1947 (7 years) |
| Atlas Indicator Works, Inc. [Chicago, IL, USA] | 1930 to 1932 (3 years) |
| Atlas Mfg. & Sales Co. [Cleveland, OH, USA] | 1947 to 1954 (8 years) |
| Atlas Mfg. Co. [Kaukauna, WI, USA] | 1925 to 1927 (3 years) |
| Atlas Mfg. Co. [NY, USA] | 1936 (1 year) |
| Atlas Mfg. Co. [OH, USA] | 1895 (1 year) |
| Atlas Novelty Co. | 1908 (1 year) |
| Atlas Sales Co. [Kaukauna, WI, USA] | 1928 (1 year) |
| Atlas Tool & Mfg. [St. Louis, MO, USA] | |
| Atlus Co., Ltd. [Japan] | 1989 to 2018 (30 years) |
| Atlus Co., Ltd. [ren. Atlus USA in 1999] [CA, USA] | 1998 (1 year) |
| Atlus Corp., Ltd. [ren. Atlus Co. in 1998] [CA, USA] | 1996 to 1997 (2 years) |
| Atlus Soft., Inc. [ren. Atlus Corp. in 1996] [CA, USA] | 1991 to 1995 (5 years) |
| Atlus USA, Inc. [CA, USA] | 1999 to 2011 (13 years) |
| ATM [Automatic Toys Modena] | 1990 (1 year) |
| Atmark [Japan] | 2001 to 2002 (2 years) |
| Atom | 2008 (1 year) |
| Atomic Demo Heroes | 1990 to 1999 (10 years) |
| Atomic Energy Commission [Los Alamos, New Mexico] | 1954 (1 year) |
| Atomic Soft. | 1991 to 1992 (2 years) |
| Atomwide, Ltd. | 1992 (1 year) |
| ATPL | 1984 to 1985 (2 years) |
| Atrativa Japan | 2006 (1 year) |
| Atrax | 1991 (1 year) |
| Atrocity | 1995 (1 year) |
| Atronic | 1999 to 2011 (13 years) |
| Attic Ent. Soft. GmbH | 1994 to 1997 (4 years) |
| Attica Cybernetics | 1991 (1 year) |
| ATV | |
| ATW [Artic Electronics Co., Ltd.] [Kaohsiung, Taiwan] | 1981 to 1983 (3 years) |
| AUCBE | 1983 to 1984 (2 years) |
| Audimicro | 1986 (1 year) |
| Audio Sonic | 1978 to 1981 (4 years) |
| Audio Spectrum [Spain] | 1987 (1 year) |
| Audoly [Nice, France] | 1911 (1 year) |
| Auffangschalen [Germany] | 1928 (1 year) |
| AUGE 4000 | 1987 to 1994 (8 years) |
| Augus Co., Ltd. [Japan] | 2005 (1 year) |
| Auguste, L. [France] | 1910 (1 year) |
| Auriez [France] | 1936 (1 year) |
| Aurora Mfg. Co. [New York, NY, USA] | 1931 to 1932 (2 years) |
| Aurum Soft | 1989 (1 year) |
| Auryn Soft. [Spain] | 1986 to 1987 (2 years) |
| AUSBUG [Australasian MicroBee Users Group] | 1983 (1 year) |
| Austerman Automatic Oil & Gasoline Service Station Co., Inc. [Whichita, KS, USA] | |
| Austin, S.J. | |
| Australian Computer & Telecommunications | |
| Australian Crackers United | 1988 to 1990 (3 years) |
| Australian Engineers & Metal Stampers Pty., Ltd. | 1957 (1 year) |
| Australian Poolette Co. [Australia] | 1933 (1 year) |
| Austrian Cracking Crew | 1986 to 1992 (7 years) |
| Austrian Union, The | 1987 to 1988 (2 years) |
| Auto Arcade | |
| Auto Doctor Co. [Geneva, NY, USA] | 1892 (1 year) |
| Auto-Bell Novelty Co. [Chicago, IL, USA] | 1950 to 1981 (32 years) |
| Auto-Data Graz | 2002 (1 year) |
| Auto-Dice Co. | 1930 (1 year) |
| Auto-Merchandising Co. [Pittsburgh, PA, USA] | 1911 (1 year) |
| Auto-Newsy, Inc. [Renton, WA, USA] | |
| Auto-Photo Co., Inc. [Los Angeles, CA, USA] | 1952 to 1962 (11 years) |
| Auto-Vend, Inc. [Dallas, TX, USA] | 1947 (1 year) |
| Auto-Vender Co. | 1911 (1 year) |
| Autocue | 1988 (1 year) |
| Autodesk | 1994 (1 year) |
| Autographics Soft. | 1983 to 1984 (2 years) |
| Automaatti Teollisuus OY [Finland] | |
| Automat Games Co. [Chicago, IL, USA] | 1931 to 1939 (9 years) |
| Automata Cartography | 1982 to 1983 (2 years) |
| Automata U.K., Ltd. | 1982 to 1985 (4 years) |
| Automated Simulations, Inc. [ren. Epyx in 1983] | 1978 to 1982 (5 years) |
| Automated Technology Associates | |
| Automaten & Sprechmaschinen | 1930 (1 year) |
| Automaten Werner & Co | 1929 (1 year) |
| Automaten-Gesellschaft GmbH [Germany] | 1959 (1 year) |
| Automaten-Manufaktur [Frankfurt, Germany] | |
| Automatenbau Pfronten | 1952 to 1957 (6 years) |
| Automatenbau Rhein-Ruhr | 1935 to 1956 (22 years) |
| Automatenbetrieb Navigator | 1934 (1 year) |
| Automatenfabrik Atlantic [Berlin, Germany] | 1929 (1 year) |
| Automates Electra GmbH | 1907 (1 year) |
| Automateur [Sweden] | 1954 (1 year) |
| Automatic | 1951 (1 year) |
| Automatic Amusement Co. [London, England] | 1889 (1 year) |
| Automatic Amusement Co., Inc. [Los Angeles, CA, USA] | 1932 to 1938 (7 years) |
| Automatic Amusement Devices, Inc. [Chicago, IL, USA] | 1930 (1 year) |
| Automatic Battery Co. [Brooklyn, NY, USA] | 1888 (1 year) |
| Automatic Billiard Corp. | |
| Automatic Book Vending Corp. [New York, NY, USA] | |
| Automatic Canteen Co. of America [Chicago, IL, USA] | 1930 (1 year) |
| Automatic Cash Discount Register Co. [Chicago, IL, USA] | 1902 (1 year) |
| Automatic Clerk & Advertising Co. | 1902 (1 year) |
| Automatic Coin Equipment, Ltd. [ACE] [Cardiff, England] | |
| Automatic Coin Machine Co. | 1931 to 1932 (2 years) |
| Automatic Coin Machines & Supply Co. [Chicago, IL, USA] | 1946 (1 year) |
| Automatic Corp. [Chicago, IL, USA] | 1932 (1 year) |
| Automatic Devices Inc. | 1947 (1 year) |
| Automatic Dispenser Co. [Beverly Hills, CA, USA] | |
| Automatic Engineering Corp. | 1935 (1 year) |
| Automatic Games [Chicago, IL, USA] | 1940 (1 year) |
| Automatic Games Co. [Inglewood, CA, USA] | 1931 to 1933 (3 years) |
| Automatic Industries [Youngstown, OH, USA] | 1931 to 1932 (2 years) |
| Automatic Inventions, Inc. [New York, NY, USA] | 1930 (1 year) |
| Automatic Jobbers Assn., Inc. | |
| Automatic Machine & Tool Co. [Chicago, IL, USA] | 1894 to 1936 (43 years) |
| Automatic Machine Co. [New York, NY, USA] | 1888 to 1940 (53 years) |
| Automatic Machine Co. [RI, USA] | 1914 (1 year) |
| Automatic Machines, Inc. [Los Angeles, CA, USA] | |
| Automatic Mfg. Co. [NY, USA] | 1892 to 1893 (2 years) |
| Automatic Musical Co. [Binghamton, NY, USA] | 1910 (1 year) |
| Automatic Novelty Co. [Kansas City, MO, USA] | 1905 (1 year) |
| Automatic Novelty Co. [London, England] | 1916 (1 year) |
| Automatic Novelty Co. [Philadelphia, PA, USA] | 1893 (1 year) |
| Automatic Novelty Co. [San Antonio, TX, USA] | 1933 (1 year) |
| Automatic Novelty Machine Co. [NY, USA] | 1888 (1 year) |
| Automatic Perfume Fountain Co. [NJ, USA] | 1888 (1 year) |
| Automatic Phonograph Exhibition Co. [New York, NY, USA] | 1890 (1 year) |
| Automatic Products Co. [New York, NY, USA] | 1949 (1 year) |
| Automatic Radio Corp. [Cincinnati, OH, USA] | 1929 (1 year) |
| Automatic Retailing Corp. [New York, NY, USA] | 1928 to 1931 (4 years) |
| Automatic Sales Co. [Lansing, MI, USA] | 1903 (1 year) |
| Automatic Sanitary Vender Corp. [New Brunswick, NJ, USA] | |
| Automatic Selling Machine Co. [New York, NY, USA] | 1888 (1 year) |
| Automatic Service Corp. [Los Angeles, CA, USA] | |
| Automatic Service Corp. of America, Inc. [Chicago, IL, USA] | 1932 (1 year) |
| Automatic Skill Machines Co. [London, England] | 1901 to 1909 (9 years) |
| Automatic Sports Co. [London, England] | 1900 to 1912 (13 years) |
| Automatic Stamping Machine Co. [Cleveland, OH, USA] | |
| Automatic Target Machine Co. [New York, NY, USA] | 1904 to 1905 (2 years) |
| Automatic Towel Cabinet Co. [Detroit, MI, USA] | |
| Automatic Trading Co. [NY, USA] | 1908 (1 year) |
| Automatic Venders, Inc. [Ashbury Park, NJ, USA] | 1929 (1 year) |
| Automatic Vending Co. | 1899 (1 year) |
| Automatic Weighing Lifting & Grip Machine Co. [Portland, ME, USA] | 1898 (1 year) |
| Automaticos Valls | 2003 (1 year) |
| Automaticos Videmur [Spain] | |
| Automatics Pasqual | 1991 to 1995 (5 years) |
| Automation | 1989 to 1990 (2 years) |
| Automatique DL [France] | 1930 (1 year) |
| Automatiques Val [Paris, France] | 1913 (1 year) |
| Autopop, Inc. [St. Paul, MN, USA] | |
| Autoreflex [Paris, France] | 1934 to 1937 (4 years) |
| Autosales Corp. [New York, NY, USA] | 1928 (1 year) |
| Autosales Gum & Chocolate Co. [New York, NY, USA] | 1899 (1 year) |
| Autovend Co. [Kansas City, MO, USA] | |
| Autronic Handels GmbH [Bremen, Germany] | |
| Autumn Dreams | 1997 to 1999 (3 years) |
| Auvi | |
| AV Artisan Corp. | 1995 (1 year) |
| Avalon Hill Video Game Co., The [Baltimore, MD, USA] | 1980 to 2012 (33 years) |
| Avalon Soft. | 1984 (1 year) |
| Avanquest Soft. | |
| Avant-Garde Publishing Corp. | 1979 to 1986 (8 years) |
| Avantage | 1989 (1 year) |
| Avantime | |
| AVB Soft. | 1983 (1 year) |
| AVC Soft. | 1981 (1 year) |
| AVD Corp. | 1992 (1 year) |
| Avelar, Ed | 1978 (1 year) |
| Avenco Corp. | |
| Avenir Amusement, Inc. | |
| Aventuras AD [Spain] | 1986 to 1992 (7 years) |
| Aventuras AM [Spain] | 1989 (1 year) |
| Aventuras Espanolas [Spain] | 1991 (1 year) |
| Aventuriers des Etoiles, Les | |
| Averill, Sean | 1990 (1 year) |
| Avery, Ltd., W. & T. [UK] | 1890 (1 year) |
| AVI [Amuse-Vend-Industries] | |
| Aviva Soft. | 1983 (1 year) |
| AVP Computing | 1987 (1 year) |
| Avralite, Ltd. | 1987 to 1988 (2 years) |
| Avranches Automatic | 2004 (1 year) |
| AVRO | 1995 (1 year) |
| AVS [Amvic Services] | |
| AVSA [Paris, France] | 1983 (1 year) |
| AW Corp. | 1991 (1 year) |
| AWA Soft. | 1983 to 1984 (2 years) |
| Award Soft. | |
| Aware | 1988 (1 year) |
| Awesome | 1991 (1 year) |
| Awesome Softworx, Inc. | 1994 (1 year) |
| AWP Games [Italy] | 1995 (1 year) |
| Axela | 1997 to 2001 (5 years) |
| Axelerate | 2003 (1 year) |
| Axenon | 1987 to 1989 (3 years) |
| Axi | 2012 (1 year) |
| Axicon | 1998 to 1999 (2 years) |
| Axiom Soft. | 1990 to 1994 (5 years) |
| Axion 1999 | 1988 to 1989 (2 years) |
| Axis Soft. | 1981 to 1983 (3 years) |
| Axlon, Inc. | 1988 (1 year) |
| Axxent Soft. | 1987 to 1989 (3 years) |
| Axxiom | 1983 to 1988 (6 years) |
| Ayashige-Soft [Japan] | 1991 (1 year) |
| Ayer, Harry L. [Newton, MS, USA] | 1894 (1 year) |
| Aylward, H. [UK] | 1923 (1 year) |
| Aylworth, Charles | 1977 (1 year) |
| Aypio [Japan] | 1993 to 1996 (4 years) |
| Ayza | 2018 to 2019 (2 years) |
| Azimut Soft | 1987 (1 year) |
| Azkoyen | 1995 (1 year) |
| Aztec Coin [UK] | |
| Aztec Soft. | 1983 to 1985 (3 years) |
| Aztech New Media Corp. [Canada] | 1994 (1 year) |
| Azuma Dev. | 1990 (1 year) |
| Azursoft [Sophia-Antipolis, France] | 1988 to 1991 (4 years) |
