Producer list
- H+
- H2 Interactive
- HABE
- HaccaWorks*
- Hachigatsu Shokudou
- Hachiiro Inko
- Hachimitsu
- Hachimitsu Ichigo
- Hachimitsu Kumasan
- Hachimitsu Soft
- Hachinoko no Sato
- Hacker International
- HACKMOCK
- Hadashi Shoujo
- Haeleth
- HAG
- Hagalaz
- Haien
- Haikara Kissa
- Haikaru
- Haikuo
- Hako Ni Go Itai Production Committee
- Hako Solo Translations
- Hakubai
- Hakudakukei
- Hakura0
- Hakutou
- Hakutouka
- Halca
- HaleyBopComet
- half
- HAL Laboratory
- Hamasaki Hanhuazu
- HAMAYARAWORKS
- Hamham Soft
- Hammerheads
- HAMSTER Corporation
- Hanabi Media
- Hanabira
- Hanabirakun
- Hanabira Project
- Hanae Novels
- Hanako Games
- Hanakojika
- Hanamaru
- hanarenmei
- Hanataba Translation
- Hanbaidairiten
- Handcrafted by M.G.
- Hanemine
- Hanerom
- Hangjiyun Hanhuazu
- Hangover Cat Purrroduction
- Hangukujijjeu
- Hanimaru
- Hanimiao Hanhuazu
- Hanjuku Nora
- Hank Worx
- Hanmaru
- hanmori
- Hannah Unkrich
- Hannuri
- Hanpamania-Soft
- Hanrangen
- Hanuli
- Haoh
- Haoh Darkness
- HappieS
- Happinet Games
- Happy Animal Friends
- Happy Backwards
- HappyEnd
- Happy Make Co., Ltd.
- Happy West
- Haraiso Marionettes
- Haramase Project
- Harawari
- Harbinger_CR
- Harbor
- Hard
- HardG.Lab
- HARD HYPNO
- Hare Tokidoki Gratin
- Harinezumi Koubou
- Harmonia
- HarmoniaProxPro
- Harmorise
- HARNESS
- Harotobira
- Harrison Barton
- Harukami
- Harukaze
- Haru-Kesu Games
- Harvest
- Hase im Haus
- Hassaku
- Hatena
- Hato-King
- Hato no Sushiki Seisakusho
- Hatsuen Kikan
- Hawkeye Co., Ltd.
- Hayabusa Star
- Hayako Fansub
- Hayashigumi
- HayleyPetHarley
- HazardKid
- Haze
- Hazel-Bun
- Hazelnut
- Hazemuth Studios
- HAZUKASHII ♥ TEAM
- Hazuki Co., Ltd.
- HB&KINOME
- HBOX.JP
- H-do-C
- h.d.p.
- HeartBring
- Heart Bringan
- Heart Color
- Heart Electronics Industry Co., Ltd.
- Heartomics
- Hearts
- Heart Soft
- Heather Robertson
- Heat Smash!
- Heat-Soft
- Hecate
- Hechikanism
- HECT
- Hedgehog's Dilemma team
- Heiantei
- Heiden
- Heisendou
- Helheim
- Helia
- Heliodor
- Helios
- Hellduriel
- HellPanda Studios
- Helyees
- Hemohemo
- Hending
- Hengaya
- heng-shi
- Henka
- Henonon Room
- Hensoku Helical Gear
- Hentai Industries
- Hentai Musume
- Hentai Seiheki Generator