| Kitty Group | Developer | |
| Kitty Horrorshow | Developer | |
| Kitty Lambda Games | Developer | |
| Kitty Rika | Developer | |
| Kitty Trouble, LLC | Developer | |
| Kitty_Cay | Developer | |
| Kittyclysm | Developer | |
| Kittynugget | Developer | |
| KivaBay | Developer | |
| Kiwee Dew | Developer | |
| Kiwi | Developer | |
| Kiwi Walks | Developer | |
| KiwiArgo | Developer | |
| KiwiFactory | Developer | |
| KiwiGameDevelopment | Developer | |
| KiwiNugget | Developer | |
| Kiwiiiiii | Developer | |
| Kiwilz | Developer | |
| Kiwiov | Developer | |
| KiwisChungos | Developer | |
| Kiwisauce | Developer | |
| Kixx | Publisher | |
| KixxPAL | Publisher | |
| Kiya Overseas | DeveloperPublisher | |
| Kiya Overseas Industry | Publisher | |
| Kiyopawn | Developer | |
| KiziKr | Developer | |
| Kizu | Developer | |
| Kiên Cá | Developer | |
| Klabater | DeveloperPublisher | |
| Klast Halc | Developer | |
| Klaus3 | Developer | |
| Klazi | Developer | |
| Kleber Andrade | Developer | |
| Klehrik | Developer | |
| Klei Entertainment | DeveloperPublisher | |
| Klein | Developer | |
| Klein Computer Entertainment | Developer | |
| Klein and Datam Polystar | Publisher | |
| KleinBoyGames | Developer | |
| Kleinzach | Developer | |
| KlemenPl | Developer | |
| Klew | Developer | |
| Klimber | Developer | |
| Klingon Software Labs | Publisher | |
| Klinker | Developer | |
| KlitzekleinArts | Developer | |
| Klius Escarlopini | Developer | |
| Klobit | Developer | |
| Klockan3 | Developer | |
| Klon | DeveloperPublisher | |
| Klon Co., Ltd. | Publisher | |
| Klonk Games | Developer | |
| Klonoz | Developer | |
| KlopapierGames | Developer | |
| Klopity | Developer | |
| Klosik | Developer | |
| KlumsyKraft | Developer | |
| Kmax607 | Developer | |
| KmvaMaeru | Developer | |
| Kna | Developer | |
| Knapnok Games | DeveloperPublisher | |
| Knick-Knack Games | Developer | |
| Knickknack PJ | Developer | |
| Knife Finger Games | Developer | |
| Knight Shift Games | Developer | |
| Knight Tech | Developer | |
| Knight Technologies | Developer | |
| KnightAoifa | Developer | |
| KnightmareGames | Developer | |
| Knights of Unity | Developer | |
| Knighty | Developer | |
| Knilax | Developer | |
| Knilght | Developer | |
| Knockaboot | Developer | |
| KnockdownTV | Developer | |
| Knoddskogen | Developer | |
| Knooblegooble | Developer | |
| Knot Studios | Developer | |
| KnotHorn Studio | Developer | |
| Know Wonder | Developer | |
| KnowWonder | Developer | |
| Knowledge Adventure | DeveloperPublisher | |
| Knowledge Adventure Inc. | DeveloperPublisher | |
| KnuckleKissStudio | Developer | |
| Knuist & Perzik | Developer | |
| Knut Muller | Developer | |
| Knwldg101 | Developer | |
| Ko | Developer | |
| KoBeWi | Developer | |
| KoalaFish Studios | Developer | |
| Koalabs Studio | Developer | |
| Koaliver | Developer | |
| Kobi | DeveloperPublisher | |
| Kobi Saha | Developer | |
| Kobliznik | Developer | |
| Kobunsha | DeveloperPublisher | |
| Kobus vd walt | Developer | |
| Koch Media | DeveloperPublisher | |
| Koch MediaEU | Publisher | |
| Kodansha | DeveloperPublisher | |
| Kodansha Research Institute | Developer | |
| Kodeleo | Developer | |
| Koder | Developer | |
| Kodiak Interactive | Developer | |
| Kodiqi | Developer | |
| Kodobur | Developer | |
| Kodobur Yazilim | DeveloperPublisher | |
| Kodomos'Arts | Developer | |
| Kodots games | Developer | |
| Kodraan | Developer | |
| Kodub | Developer | |
| Koei | DeveloperPublisher | |
| Koei Canada | Developer | |
| Koei Tecmo | DeveloperPublisher | |
| Koei Tecmo Games | DeveloperPublisher | |
| KoeiEU | Publisher | |
| KoeiJP | Publisher | |
| KoeiJP,NA | Publisher | |
| KoeiJP/NA | Publisher | |
| KoeiPAL | Publisher | |
| Koffy | Developer | |
| Koga Game Factory | Developer | |
| Kogado Software | DeveloperPublisher | |
| Kogado Software Products | DeveloperPublisher | |
| Kogado Studio | DeveloperPublisher | |
| Koi | Developer | |
| Koi Legend | Developer | |
| Koicrow | Developer | |
| Koimarina Games | Developer | |
| Kojima Productions | Developer | |
| Koki Studios | Developer | |
| Koko13.2 | Developer | |
| Kokopel | Developer | |
| Kokopeli | DeveloperPublisher | |
| Kokopeli Digital Studios | Publisher | |
| KolFun | Developer | |
| Kolja Hubatsch | Developer | |
| Kolphis | Developer | |
| KoltonKennedy | Developer | |
| Kolupsy | Developer | |
| Komax | Publisher | |
| Komes | Developer | |
| Komeya | DeveloperPublisher | |
| Komitsu | Developer | |
| Komodroid New Zealand | Developer | |
| Kompakt | Developer | |
| Kompart UK | Publisher | |
| Kompot Studios | Developer | |
| Komrade_Konrad | Developer | |
| Komster | Developer | |
| Konam | Publisher | |
| Konami | DeveloperPublisher | |
| Konami (JP) | Publisher | |
| Konami (NA) | Publisher | |
| Konami (NA/EU) | Publisher | |
| Konami / | Publisher | |
| Konami Computer Entertainment Hawaii | Developer | |
| Konami Computer Entertainment Japan | DeveloperPublisher | |
| Konami Computer Entertainment Kobe | Developer | |
| Konami Computer Entertainment Nagoya | DeveloperPublisher | |
| Konami Computer Entertainment Osaka | Developer | |
| Konami Computer Entertainment Sapporo | Developer | |
| Konami Computer Entertainment Studios | Developer | |
| Konami Computer Entertainment Tokyo | Developer | |
| Konami Computer Games Aoyama | Developer | |
| Konami Digital Entertainment | DeveloperPublisher | |
| Konami EU | Publisher | |
| Konami Examu Entertainment inc. | Developer | |
| Konami HWI | Developer | |
| Konami Honolulu Studio | Developer | |
| Konami JP | Publisher | |
| Konami JP/EU | Publisher | |
| Konami NA/EU> | Publisher | |
| Konami Software Shanghai | Developer | |
| Konami TYO | Developer | |
| Konami of America | DeveloperPublisher | |
| KonamiEU | Publisher | |
| KonamiJP | Publisher | |
| KonamiJP,KO | Publisher | |
| KonamiNA | Publisher | |
| KonamiPAL | DeveloperPublisher | |
| KonanDenki | Publisher | |
| Konata_chan | Developer | |
| Kondra | Developer | |
| Koneko | Developer | |
| KonerLoner | Developer | |
| Kong Orange | Developer | |
| Kongregate | Publisher | |
| Konig Games | Developer | |
| Konillon Game Studio | Developer | |
| Konjak | Developer | |
| Konrad Gadzina | Developer | |
| Konrad Mampe | Developer | |
| Konradventure | Developer | |
| Konstandin Igor Ruiz | Developer | |
| Konstantin Khitrykh | Developer | |
| Konstantin Kitmanov | Developer | |
| Konstantinos D. | Developer | |
| Konstantinosmy | Developer | |