Vi har så langt registrert 19 566 rederier
| Navn | Grunnlagt | | Willy Kubon, Bergen | |
| Willy Nyvoll, Honningsvåg | |
| Willy Oppen, Oslo | |
| Willy Rørstad, Bryggja | |
| Wilmann, Johan, Trondheim | |
| Wilson & Mørland, Arendal | |
| Wilson Ship Management A/S, Bergen | |
| Wilson Shipowning A/S, Bergen | |
| Wilson Shipowning A/S, Nassau | |
| Windjammer Cruises Ltd.,Miami | |
| Wind Management A/S, Oslo | |
| Wind Marine A/S, Oslo | |
| Wind Shipping A/S, Bergen | |
| Wind Tankers A/S, Oslo | |
| Winge & Co, Kristiania / Oslo | 1.1.1855 |
| Winge Olsen. O.P. & Co. Kristiania | |
| Winnem, Michal. Løvøy | |
| Wipu O/Y v/ A. Wihuri | |
| Wirèns R/A | |
| With, J.A., Kragerø | |
| Wittus Fürst, Arendal | |
| Wittus J. Furst, Arendal | |
| Wittus & Juell. J. Langesund | |
| W. Jost, Kristiansand S | |
| W. K. Frimann & Co, Bergen | |
