Vi har så langt registrert 16 435 rederier
| Navn | Grunnlagt | | Ace Nav. Co Ltd, Monrovia | |
| Acergy Havila Ltd., Fosnavåg | |
| A. C. Gogstad m/fl. Sandefjord | |
| A. Chr. Hein & Søn, Arendal | |
| A. C. Olsen, Sandefjord | |
| Acomarit A/S, Bergen | |
| Acomarit A/S, Oslo | |
| Actieselskapet Magnum, Tvedestrand | |
| Actif Management A/S, Førde | |
| Actinor Shipping A/S, Oslo | |
| Actinor Short Sea II A/S, Bergen | |
| Active Warrior A/S, Ålesund | |
| Activ Shipping A/S, Oslo | |
| Activ Ships Management A/S, Kristiansand | |
| Adamsen, N.F. Svelvik | |
| Adam Steam Fishing Co. Ltd. (Basil A. Parkes) Fleetwood,U.K. | |
| Adelante Fishing Comp. A/S, Bokn | |
| Admiral Shipping Co. Ltd. v/ Glenn & Co. Ltd. | |
| Admiral Shipping Services Ltd. A/S, Oslo | |
| Adolf Gabrielsen,Neversund, Snik | |
| Adolf Nesheim, H. Rosenberg & B. Nesheim, Haugesund | |
| Adolf Sandborg, Ålesund | |
| Adolfsen, Ansjøn, Trondheim | |
| Adolfsen, Jens, Sula, Trondheim | |
| Adolf Syvertsen, Fredrikshald/Halden | |
