Bedrift U - Torshov
- Ulf
- Umtra AS
- Utpust AS
- Utakt AS
- Udgaarden AS
- Urbe Services AS
- Uni-Fi
- Unni Løvlid
- Ullevålsveien 37 AS
- Ungdommens Sjakkforbund
- Umspannwerk Invest AS
- Ulrikke Nilsen
- Urban Tokvam AS
- Ulla Marie Broch
- Una Bryn Damsgård
- Underholdningskonsulenten Bjarte Tjøstheim
- Ulf Anderssons Pianoservice
- Utpust V/Hege S Karlsen
- Uthberg gårdstjeneste og drift