Vi har så langt registrert 19 632 rederier
| Navn | Grunnlagt | | United States Maritime Commission,USA | |
| United States Navy,USA | |
| United States Petroleum Carriers Inc. v/ Aristotle S. Onassis. | |
| United States Shipping Board,U.S.A. | |
| United States War Shipping Adm. USA | |
| United Steam Navigation Co., Newcastle | |
| United Whalers Ltd. London | |
| Unitherm A/S, Oslo | |
| Unitrans A/S, Måløy / Bergen | |
| Unitrans Marine, Bergen | |
| Unity A/S, Egersund | |
| Univan Management Service AS, Arendal / Bergen | |
| Univan Norge A/S, Bergen | |
| Univan Ship Management Ltd, Monrovia | |
| Univan Shipping Services A/S , Bergen | |
| Universal Industri & Invest A/S, Sandefjord | |
| Universe Tankships Inc.,Monrovia | |
| Universitetet i Bergen | |
| Universitetet i Bergen - Biologiske Stasjon, Bergen | |
| Universitetet i Nordland, Bodø | |
| Upper Lake & St. Lawrence Transportation Co. Ltd. v/ G.C. Leitch. | |
| Urangsæter, Nils, Urangsvåg, Bømlo | |
| Urdal Sandkompani, Engen, Bergen | |
| Urdal, Trygve, Lindaas | |
| Urefangst A/S, Sennesvik, Ålesund | |
