Firma U - Solli
- Unique AS
- Unitel AS
- Unilon AS
- Uphill company AS
- Univers Hermier
- Underscore consulting AS
- Ues invest AS
- Ugl Norge ANS
- Uranienborgvn 12 ANS
- Underhaugsveien 15 AS
- Ullevålsveien 1 AS
- Universal Marine AS
- Um Holding AS
- Unni Bergendahl
- Uri Helene
- Urra Festivalen
- Utigard design
- Under Holding AS
- Universal Projects AS
- Utleie Frem
- Utopia Workshop AS
- Uab Key Elements
- UB Capital Norway AS
- Universelt Fredsforbund Uf
- Ulf Valde Jensen
- Ugland Stena Storage AS
- Ung Nordisk musikk Norge
- United Arab Emirates Embassy
- Understøttelsesselskapet for Husarme i Christiania
- Understøttelsesselskapet for Husarme i Christiania