| Nintendo GameCube disc |  Jim Henson's Muppets Party Cruise Model DOL-GM9E-USA | 2003 | TDK Mediactive, Inc. |
| Nintendo GameCube disc | Jimmy Neutron - Boy Genius Model DOL-GJNE-USA | 2003 | T-HQ, Inc. Toy HeadQuarters |
| PC/MS-Windows CD | Jimmy Neutron vs. Jimmy Negatron | 2003 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo Famicom cart. | Jing Wei Tian Hai | 2003 | HengGedianzi China |
| Pachislot | Jinjin | 2003 | Luster Co., Ltd. Japan |
| Sony PlayStation CD | Jinx Model SCES-03908 | 2003 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! King Camel Model SLPS-20317 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Salaryman Kintarou Model SLPS-20267 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Salaryman Kintarou Model SLPS-20268 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Sammy's Collection 2 DX Model SLPS-20339 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Sammy's Collection 2 Model SLPS-20340 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Savanna Park DX Model SLPS-20292 | 2003 | Sammy Corp. Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Savanna Park Model SLPS-20293 | 2003 | Sammy Corp. Japan |
| Slot Machine | Jockey Star III | 2003 | Unknown Korea |
| Slot Machine | Jockey Star IV | 2003 | Unknown Korea |
| Slot Machine | Jockey Star VI | 2003 | Unknown Korea |
| PC/MS-Windows CD | Joi O Kkusu | 2003 | Blue Gale |
| PC/MS-Windows CD | Jojiyoi Okusu | 2003 | Blue Gale |
| Slot Machine | Joker 21 | 2003 | San Remo Games srl San Remo, IM, Italy |
| Medal video game | Joker Ccamdo | 2003 | Unknown Korea |
| Medal video game | Joker Club | 2003 | Unknown Korea |
| Slot Machine | Joker Fever - Dragon Deal Model RVN-BLX | 2003 | Dragon Co., Ltd. |
| Slot Machine | Joker Magic | 2003 | Sammy Corp. Japan |
| Kiddie Ride (Mechanical) | Joy Jumbo | 2003 | Subsino Co., Ltd. |
| Slot Machine | Joy Pet | 2003 | Subsino Co., Ltd. |
| Microsoft XBOX disc | Judge Dredd - Dredd vs Death | 2003 | Unknown |
| Nintendo GameCube disc | Judge Dredd - Dredd vs Death Model DOL-GJDX-EUR | 2003 | Sierra Ent., Inc. USA |
| Sony PlayStation 2 disc |  Judie no Atelier - Gramnad no Renkinjutsushi Model SLPM-65359 | 2003 | Gust Japan |
| Pachislot | Juggler Girl | 2003 | Kitac Kita Denshi Corp. Japan |
| Pachislot | Julian | 2003 | Net Corp. Japan |
| Slot Machine | Jumpin' Jack | 2003 | Bally Wulff |
| Fruit Machine | Jumpin' Jokers | 2003 | Vivid Gaming England |
| Slot Machine | Jungle | 2003 | Subsino Co., Ltd. |
| Redemption mechanical game | Jungle Treasures | 2003 | SEGA Amusements, Inc. Elk Grove Village, IL, USA |
| PC/MS-Windows CD | Jurassic Park - Operation Genesis | 2003 | Vivendi Universal Games, Inc. |
| Microsoft XBOX disc | Jurassic Park - Operation Genesis | 2003 | Unknown |
| Nintendo GBA cart. | Jurassic Park Institute Tour - Dinosaur Rescue Model AGB-AJ8J-JPN | 2003 | Rocket Co. Japan |
| Nintendo GBA cart. | Justice League Chronicles Model AGB-BJLE-USA | 2003 | Midway Home Ent. |
| Medal video game | K2+ | 2003 | Unknown Korea |
| Slot Machine | Kaboom | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
