Vi har så langt registrert 19 566 rederier
| Navn | Grunnlagt | | Theodor Iversen m/ fl, Monsøya / Kristiansand | |
| Theodor & Johan Borhaug, Lista | |
| Theodor Jørgensen, Vespestad, Lillesand | |
| Theodor Kaaveland, Farsund | |
| Theodor Knudsen, Lyngdal | |
| Theodor Larsen, Korshavn | |
| Theodor Moe, Fredrikstad | |
| Theodor Moe, Trondheim | |
| Theodor Olsen, Borhaug | |
| Theodor & Samuel Tønnesen, Borhaug | |
| Theodor Schive, Grimstad | 1893 |
| Theodorsen,Simon,Snik,Mandal | |
| Theodor Tobiassen, Mandal | |
| Theodor Tønnesen, Tjørve | |
| Theofano Maritime Co. Ltd. v/ N.G. Livanos, Chios. Hellea | |
| The Red "R" Steam Ship Co. v/ Stephens Sutton | |
| Therese Banch v/ Erik Banchs rederi | |
| T. Hermansen, Drammen/Kristiania | |
| The Saint Line Ltd, London, U.K. | |
| Thesen & Co., A.L., Stavanger | |
| Thesen Steamship Co. Ltd. Cape Town, Syd Afrika | |
| The Shipping Controller v/ J. J. Thomas & Co. London, Uk. | |
| The Sire Streamship Co.c/o William Muir Young, London | |
| The Southern Whaling & Sealing Co.Ltd.U.K. | |
| The South Georgia. Co. Ltd. (Chr. Salvesen & Co. Leith. UK.) | |
