| Arcade Video game |  Ixion | 1983 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Atari 2600 cart. | Ixion | 1984 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD |  J. League Pro Soccer Club wo Tsukurou! | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | J. League Pro Soccer Club wo Tsukurou! 2 | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | J. League Pro Striker 2 Model G-5540 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | J. League Pro Striker Perfect Model G-5532 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | J. League Pro Striker Model G-5526 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | J. League Victory Goal '96 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | J. League Victory Goal '97 | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | J.League GG Pro Striker '94 Model G-3417 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | J.League Pro Soccer Club o Tsukurou! Model HDR-0028 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | J.League Soccer - Dream Eleven Model G-3431 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | J.League Victory Goal | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega-CD | Jaguar XJ220 Model 4602 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega NAOMI cart. | Jambo! Safari | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Janmu | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Janou Touryuumon Model G-4096 P | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Jet Rocket | 1970 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD |  Jet Set Radio Taikenban | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Jet Set Radio Model HDR-0078 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD |  Jet Set Radio Model MK-51058-50 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Jet Squadron | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Jewel Master Model G-4047 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Jinzou Ningen Hakaider - Last Judgement | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Joe Montana Football Model 7062 | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega-Tech cart. | Joe Montana II - Sports Talk Football Model 58 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Joe Montana II - Sports Talk Football Model G-4065 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Joe Montana's Football Model 2403 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Joe Montana's Football Model G-3305 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega CD | Joe Montana's NFL Football Model 4201 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega CD | Johnny Mnemonic | 19?? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Video Slot Machine | Joker's Wild | 198? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | JRA PAT for Dreamcast Model T-42501M | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Judgement Force | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | JuJu Densetsu Model G-4064 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Jumbo | 1970 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega System 24 disk | Jumbo Ozaki Super Masters | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Jurassic Park | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Jurassic Park - Rampage Edition Model 1557-50 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Jurassic Park Model 1056-40 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
