We have so far registered 19,743 shipping companies
| Name | Founded | | A/S Sandbryn, Sandefjord | |
| A/S Sandefjords Trawlfiskeselskab, Sandefjord | |
| A/S Sandsugere, Oslo | |
| A/S Saturn Co., Bodø | |
| A/S Saturn & Co, Fredrikstad | |
| A/S Saturn Co.,Oslo | |
| A/S Sea Frost, Hammerfest | |
| A/S Secon, Trondheim | |
| A/S Sentinel Hemne, Trondheim | |
| A/S Sentinel Offshore,Oslo | |
| A/S Shellbåtene,Oslo | |
| A/S Shellbåtene, Ålesund | |
| A/S Shipmanagement Ltd, Bergen / Trondheim | |
| A/S Shipmanagement Ltd.,Larvik | |
| A/S Shipmanagement Ltd., Moss | |
| A/S Shipmanagement Ltd, Oslo | |
| A/S Shipmanagement Ltd., Tromsø | |
| Assiduous A/S, Arendal | |
| A/S Sigba, Bergen | |
| A/S Sigrid, Grimstad | Slutten 1800 tallet |
| A/S Sirina, Haugesund | |
| A/S Sivert, Vanse | |
| A/S Sjåholm, Skudeneshavn | |
| A/S Sjøassistanse, Bergen | |
| A/S Sjøreker, Senjahopen, Tromsø | |
