Bedrift U - Ensjø
- Utla AS
- Urstrømmen
- Unaas AS
- Usikker AS
- Utelivsshoppen DA
- Ultraball
- Unicare AS
- Urba AS
- Useriøst AS
- Universe AS
- Utleietall
- Ulfsten Consulting
- Ulvestad Maria
- Urstad Heidi
- Unaas Cycling AS
- Unaas Cycling AS
- Undervisning Holhjem
- Usman Holding AS
- Ulsmågveien 7 AS
- Ultrawise Nordics AS
- Ullern allé AS
- Utu Norge AS
- Undervisningsbygg Oslo KF
- Ureche Carmen
- Utigard Konsulting AS
- Ullensakergaten 1 Boligsameie
- Ullensakergaten 1 Boligsameie
- Uno-X Bikes AS
- Unicare Eiendom 2 AS
- Unicare Eiendom 1 AS
- Ukjent Format Espen Willander
- Unicare Bo & Omsorg AS
- Uno-X Mobility Norge AS
- Uno-X E-Mobility Norge AS
- Uno-X Mobility Norge AS Avd Oslo Hovedkontor