Jackie Chan Adventures is an American animated television series chronicling the adventures of a fictionalized version of action film star Jackie Chan. Many of the episodes contain references to Chan's actual works. This series ran on Kids' WB! from September 9, 2000 to July 8, 2005 for a total of 95 episodes, or 5 seasons. During its run, it was also shown on Cartoon Network, and afterwards, its reruns landed on Disney XD. An Arabic translation has been airing on MBC 3 since early 2006 and a Tamil translation has been airing on Chutti TV and Kannada translation has been airing on Chintu TV since the launch of both channels. It also used to air on Cartoon Network in Urdu. There have been several toys and video games based on the series. Its main character designer is Jeff Matsuda.

Jazz Jackrabbit is a series of video games featuring the eponymous character of Jazz Jackrabbit, a green anthropomorphic hare, who fights with his turtle nemesis, Devan Shell, in a science fiction parody of the fable of The Tortoise and the Hare. Created by Cliff Bleszinski and developed by Epic MegaGames, the series debuted on the personal computer in 1994 with Jazz Jackrabbit. The series consists of two computer games and a handheld console game. He was originally the mascot of EpicGames.

Jeremy McGrath Supercross 2000 is a supercross racing game for the Nintendo 64, Dreamcast, PlayStation and Game Boy Color. It was released in North America and Europe in 2000. The game is endorsed by supercross star Jeremy McGrath. Note that this game is not the same as the game Supercross 2000, which was released in 1999 by EA Sports.

Jet Set Radio (ジェットセットラジオ, Jetto Setto Rajio, called Jet Grind Radio in North America) is a video game for the Dreamcast, developed by Smilebit and published by Sega on June 29, 2000 in Japan, October 30, 2000 in North America and November 24, 2000 in Europe. A version of the game by Vicarious Visions was released by THQ for Game Boy Advance on June 26, 2003 in North America and February 20, 2004 in Europe. An HD version of the game by Blit Software was released for Xbox Live Arcade, PlayStation Network and Windows in September 2012. Its sequel, Jet Set Radio Future was released in 2002 for the Xbox after Sega became a software-based company. The game is also known for spearheading the use of cel-shaded graphics in video games.

Jimmy Neutron refers to a Nickelodeon franchise that involves a feature film, two television series, and several video games and television films.

Jinsei Game (人生ゲーム) is the Japanese version of the board game that is called The Game of Life in North America. Unlike The Game of Life, the player starts in his toddler years and has to go to elementary school, junior high school, and high school before being allowed to either go to university or start his career. However, the board game has been updated numerous times like its North American counterpart. It was released in 1967 by a toy company called Takara. It has been enjoyed by Japanese boys and girls for generations. The game has been adapted for the Famicom, the Super Famicom, the Nintendo 64, the PlayStation and the Nintendo DS. Most of them are considered to be electronic board games while RPG Jinsei Game functions more like a role playing game with a post-industrial theme.