- Un Moine Bénédictin Philippe Martin
- United Nations Publications
- Urantia Foundation
- U & I Entertainment Limited
- U&I
- U&I Entertainment
- UBI Soft
- ubik
- Ubiquiti
- Ubiquiti Networks
- UBISO
- Ubisoft
- Ubisoft (UBITP)
- UBISOFT EMEA
- Ubisoft entertainment
- Ubisoft Spain
- Ubisoft UBITP
- UBTE
- UD FLAMMARION SA
- UDG GEAR
- Udo Becher
- Udo Bernhart Rasso Knoller Christian Nowak
- UEEBAI
- UFESA
- UGC
- UGEARS
- Ugo Barlozzetti Sandro Matteoni
- UGREEN
- Uhlenbeck Chris
- UHU
- UI
- UI Ent
- UIE
- UIEG
- UIG
- Uig (Hoanzl)
- UIG Entertainment GmbH
- UIG GmbH
- Uk Ltd Nintendo
- Uketsu
- Ukonic
- Ulefone
- Ulmann
- Ulmer
- Ulrich Laurent
- Ulrich Leben
- Ultenic
- ULTIMA
- Ultimate
- Ultimate Ears
- Ultimate Guard
- Ultra Pro
- Ultrasone
- Ulysse Lubin
- Ulysse Thevenon
- Umberto Eco
- Umberto Pasti Ngoc Minh Ngo
- Umberto Saba
- UMBRO
- Umetaro Aoi
- Umidigi
- Umsm
- Unbekannt
- Unbranded
- Uncharted
- UNDC
- Uni - Ball
- Uni-ball
- Unicam
- Unicview
- Unifosa
- Unify
- Unihertz
- Unihertz 8849
- Unimet
- Union
- Union Nationale Des Associations D'Infirmiers De Bloc Opératoire Diplômés D'Etat (France)
- Union Nationale Des Fédérations Départementales Des Chasseurs (France)
- unique eyes
- Unispectra
- United Games Entertainment GmbH
- United Independent Entert
- United Independent Entertainment
- United Independent Entertainment GmbH
- 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)
- Université Paris-Saclay
- University Games
- University Of California Press
- University Of Chicago Press
- Unknown
- UNLA
- Unold
- Unplug
- Upcycles
- Uppe
- Upper Deck
- Upyaa
- URBA
- Urban Arrow
- URBAN COMICS
- Urban Factory
- Urban Glide
- Urban Jungle
- URBAN PRIME
- Urbanears
- Urbanglide
- Urbanista
- URBANRIDE
- UrChoiceLtd
- Urs Widmer
- Ursula K. Le Guin
- Uru-Chan
- USAG
- Usamaru Furuya
- USAopoly
- Usborne
- Usbridge
- USCAMEL
- Usm
- Uta Seeburg
- Uten
- Uunique
- Uvre Collective
- Uwant
- Uwe Wittstock
