Vi har så langt registrert 19 632 rederier
| Navn | Grunnlagt | | Soløyvåg A/S, Hustad | |
| Sommerfeldt & Abrahamsen, Porsgrunn | |
| Songa Shipmanagement Ltd, Oslo | |
| Sonja Hjønnevåg, Kolgrov, Florø | |
| Sontor A/S, Fjørtoft, Ålesund | |
| Sophie Bredsdorff, Kragerø | |
| Sophie Nielsen, Kristiania | |
| Sophus Schanche, Bergen | |
| S.O. Rødeseike, Haugesund | |
| S. Osmundsen, Fredrikstad | |
| S. O. Stray & Co. (fra 1912), Kristiansand | 1866 |
| Sotra Tank A/S, Straume, Bergen | |
| South American Saint Line Ltd.v/ B.& S. Shipping Co. Ltd. | |
| South Atlantic Steam Ship Co. | |
| South Atlantic Steamship Line, Savannah, USA | |
| South Atlantic Transport Co.of Liberia Inc,Monrovia | |
| South Eastern Shipping A/S, Oslo | |
| Southern Pacific S.S.Lines | |
| Southern Steam Ship Co. Philadelphia, PA. USA | |
| Southern Whaling & Sealing. Co. Ltd. ( N.C. Watt. mngrs), Cape Town, Syd Afrika | |
| Sparebank 1 Finans Midt-Norge A/S | |
| Sparebank 1 Finans Nord - Norge A/S, Sandnessjøen | |
| Sparebank 1 Finans Nord-Norge A/S, Tromsø | |
| Sparebanken Finans Nord-Norge, Tromsø | |
| Sparebanken Nord - Norge, Tromsø | |
