- UB+
- Ubiquiti
- Ubisoft
- UBISOUND
- ubsound
- UCLEAR
- Udimension
- UFEELING
- Ufi
- Ugoos
- Uher
- UIISII
- Ultimate
- ultimate ears
- Ultra Control
- Ultra Drive
- Ultraforce
- ULTRALINK
- Ultramedia
- Ultrasone
- Ultrasport
- Ultravox
- Ultron
- UMA
- Umax
- Umc
- UMEKO
- UNCOREX
- Under Armour
- Under Control
- UNDERDOG TECH
- UNEED
- Unic
- Unicorn
- Unicview
- Uniden
- UNIELECTRONIC
- Uniformatic
- Unilux
- Unison
- Unison Research
- Unit
- United
- United Labels
- Unitek
- Unitone
- Unitra
- Unity Media
- Univers
- Universal Uos
- Universum
- Univision
- Unomat
- Unotec
- Unplugged
- UO
- Upvel
- URAGE
- Urbanears
- Urban Factory
- Urbanista
- Urban Monkey
- URBAN REVOLT
- Urban Sound
- Urbanz
- UrCover
- US Amps
- USAMS
- Us Blaster
- US Robotics
- Utax
- Uunique
- UWATER