- U&I
- U&I Entertainment
- UBI Soft
- ubik
- Ubiquiti
- Ubiquiti Networks
- UBISO
- Ubisoft
- Ubisoft (UBITP)
- UBISOFT / EMME
- UBISOFT EMEA
- Ubisoft entertainment
- Ubisoft Spain
- Ubisoft UBITP
- Ubtech
- UDG GEAR
- UFESA
- UGC
- UGEARS
- UGREEN
- UI
- UI Entertainment
- UIE
- UIEG
- UIG
- Uig (Hoanzl)
- UIG Entertainment GmbH
- UIG GmbH
- Uk Ltd Nintendo
- Ulefone
- Ulmer
- Ultenic
- Ultimate
- Ultimate Ears
- ultimea
- ULTIZER
- Ultradrone
- ULTRAHUMAN
- Ultrasonic
- Ulysse Lubin
- Ulysse Thevenon
- Umi Sleepy-C
- Umidigi
- Umsm
- Unbekannt
- Unbranded
- UNDC
- Under Control
- Unicam
- Unihertz 8849
- unique eyes
- UniqueMe
- UNIROSS
- United Independent Entertainment
- United Labels
- United Publishing
- United Soft Media
- United Soft Media Verlag
- United Soft Media Verlag GmbH
- United Software
- Univega
- Universal
- Universal Audio
- UNIVERSAL CLASSIQUE
- Universal Interactive
- Universal Studio Canal Video
- universel
- Université De Paix (Namur Belgique)
- University Games
- University Of California Press
- University Of Chicago Press
- University Of Rochester Press
- Unknown
- UNO
- Unold
- Unowhy
- Unplug
- UNYKAch
- Uppe
- Upper Deck
- UPPRINT
- Upyaa
- Urban Arrow
- URBAN COMICS
- Urban Drivestyle
- URBAN FACT
- Urban Factory
- Urban Jungle
- URBAN PRIME
- URBANBIKER
- Urbanears
- Urbanglide
- Urbanista
- UrChoiceLtd
- Ursula K. Le Guin
- Urtopia
- Uru-Chan
- USAopoly
- Usborne
- USCAMEL
- Usm
- Uten
- UTO
- Uwant
