Producer list
- U10ME
- UberPie
- UbiK
- Ubisoft
- Ubisoft Halifax
- Ubisoft Paris
- Uchuu Tetsujin
- Ucom
- Ucom Co., Ltd.
- U-Dash
- UFO-team
- Uguisu Kagura
- UHMA project
- Uhtred
- Ukonnemi
- Ulala
- Ullucus Heaven
- Uma
- Ume Soft
- Umineko Project
- Umitsuki Production
- Umi Yuri Kurage
- Unalis
- Unbalance
- Unbroken Hours
- Uncanny!
- Unchain
- Unconnect
- Undead
- Undead Family
- Undead World
- Undel
- Underbliss
- Underdogs Inc.
- Underground Campaign
- Under Lip
- UnderMoon
- UnderwaterGarden
- undo
- unicodepepper
- UNICO Inc.
- Unicorn-A
- Unicorn-B
- Unicorsity
- UnicoЯn
- Unison Shift
- Unison Shift: Accent
- Unison Shift: Blossom
- Unison Shift: Clear
- unitcheese
- UNITE Projects
- Unjou Kairou
- Unkenbro
- Un Knock Out Co., Ltd.
- Unknown
- unknown5
- Unmei No Basho
- UnN/A
- Unnamed Team
- Unseen Kingdom
- Untouchable
- Unwonted Studios
- Uozumi Fuyu
- Upset Co., Ltd.
- Upside Down Fox
- Uracil
- Uragiri no Doukutsu
- Uragiri no Doukutsu B2F
- Uran
- Uran Co., Ltd.
- Uran (Studio Kuon)
- Uraotome
- Ura Pirochaki
- Urayoroduya
- Uresen
- US8
- UsaBerryHime
- Usagi Club
- Usagi Purin
- Usagi Software
- UsagiToxic
- UsagiTripleSix
- Usagizuki
- usamie
- Ushimitsu Soft
- Us:Track
- UsuHane
- Utage
- Utamaro Soft
- Uten Chuushi
- Utsukiyo
- U-WORKS
- Uyokyokusetsu
- UZU
- Uzumeya