| Handheld game |  Jumanji Model 40759 | 1996 | Parker Bros. Beverly, MA, USA |
| Handheld game | Jumble Model JM-125 | 198? | Unknown |
| Handheld game | Jumper Model GWG-310 | 198? | GoldStar Korea |
| Handheld game | Jumping Boy | 1982 | Gakken Japan |
| Handheld game | Jungle | 198? | Sunwing |
| Handheld game | Jungle 777 | 198? | Sunwing |
| Handheld game | Jungle 777 | 1982 | Altic |
| Handheld game | Jungle Adventure Woodman Model 4984 | 1982 | Masudaya Corp. Japan |
| Handheld game | Jungle Boy Model SL-75J | 198? | Unknown |
| Handheld game | Jungle Fighter 3D Model 7622 | 1983 | Tomy |
| Handheld game | Jungle Kong | 198? | Cresta |
| Handheld game | Jungle Panic Model 0200033 | 1984 | Bandai Co., Ltd. Japan |
| Handheld game | Jungle Star Model GJ-9 | 198? | Casio Computer Co., Ltd. |
| Handheld game | Jungleboy | 198? | Epoch Co., Ltd. Tokyo, Japan |
| Handheld game | Jungler | 1983 | Gakken Japan |
| Handheld game | Jungler | 198? | Lansay France |
| Handheld game | Jupiter 2051 | 1981 | Morioka Tokei, Inc. |
| Handheld game | Jurassic Park | 1988 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Jyarinko Chie Model 16273 | 1982 | Bandai Co., Ltd. Japan |
| Handheld game | K.O. Boxing | 1983 | Gakken Japan |
| Handheld game | Kaboom! | 199? | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Kageninja Model 16266 | 1981 | Bandai Co., Ltd. Japan |
| Handheld game | Kamen Rider | 1989 | Bandai Co., Ltd. Japan |
| Handheld game | Kangoku Lock | 1982 | Takara Co., Ltd. Japan |
| Handheld game | Karate Fight Model CG-610 | 1983 | Casio Computer Co., Ltd. |
| Handheld game | Karate Fighters Model 5053 | 198? | Masudaya Corp. Japan |
| Handheld game | Karate King Model 7-748 | 1988 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Karnov Model 7-783 | 1989 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Kasparov Pocket Plus | 199? | Saitek |
| Handheld game | Kasparov Traveller Model 117 | 199? | Saitek |
| Handheld game | Kawasaki ZX-7R | 199? | Coleco Industries, Inc. Amsterdam, NY, USA |
| Handheld game | Kazaam | 1996 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Kekkyoku Nankyoku Daibouken | 1990 | Konami Industry Co., Ltd. Japan |
| Handheld game | Kevin Keegan's Soccer | 1979 | Grandstand |
| Handheld game | Kick - The Goal Soccer | 1979 | Bambino, Inc. Los Angeles, CA, USA |
| Handheld game | Kick n' Pass Football Model 2397 | 198? | Toytronic |
| Handheld game | Kid's Adventure Model KEG-2103 | 1993 | Elekit Japan |
| Handheld game | King Arthur's Knight | 1982 | Gakken Japan |
| Handheld game | King Kong | 1983 | Orlitronic France |
| Handheld game | King Kong Jungle Model 7854 | 1982 | Gama Tronic |
