Bedrift U - Skedsmokorset
- Upright AS
- Unipos AS
- Utsiktshytta AS
- Unipark AS
- Univern
- Uniteam AS
- Ullereng Eva
- Utepeisen Skogsletten
- Undseth Consulting
- Uhre Sy
- Ulya Manko
- Uterom Entreprenør AS
- Utviklings Forening Mmunai
- Utviklings Forening Mmunai
- Uller & Gran AS
- Unikate Kate Brevig
- Unik Tamilsk Forening
- Unik Tamilsk Forening
- Utmo Brynjulf Johan
- Umicore Building Products Scandinav
- Ungdomsklubbene Teensville og Jonathan
- Ups & Downs Romerike