Vi har så langt registrert 19 744 rederier
| Navn | Grunnlagt | | Wittus J. Furst, Arendal | |
| Wittus & Juell. J. Langesund | |
| W. Jost, Kristiansand S | |
| W. K. Frimann & Co, Bergen | |
| Wlhelmsen m/ fl. Drøbak | |
| W. Lyche, Halden | |
| Wm. Eiendom A/S, Kopervik | |
| W. M. Holby, Kristiania | |
| W. M. Kallevig, Arendal | |
| Wm. Kallevig & John Messel, Arendal | |
| W. M. Michaelsen, Filtvedt, Soon | |
| W. M. Michaelsen, Soon / Moss | |
| W. Mohn, Tønsberg | |
| W. Mordt, Fredikstad | |
| Wm. Troye, Bergen | |
| W. M. Trøye, Bergen | |
| Wm. Wright, Porsgrunn | |
| W. Neumanns Rederi, Bergen | |
| Woermann Line A.G. | |
| Wollert D. Krohn, Bergen | |
| Wollert Holsts Rederi A/S, Bergen | |
| Wollert Konow, Bergen | |
| Worrall, William, Chester, UK | |
| W. Petersen, Holmestrand | |
| W. P. Lorentzen, Kristiania | |
