Vi har så langt registrert 19 632 rederier
| Navn | Grunnlagt | | 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.) | |
| The Texas Company (Norway) A/S, Oslo | |
| The Texas Company, USA | |
| The Union Whaling CO, Ltd.,Durban,Sør Afrika | |
| Thevik, Johan, Hellandsjøen | |
| The Walton Shipping Co. Ltd. v/ Stephens, Sutton. | |
| T. Heyerdahl, Kristiania | |
| Th. Fearnley, Kristiania | |
| Th. F. Fekete & Co, Tønsberg / Oslo | |
| Th. Gjesdal, Bergen | |
| Th. Grenager, Halden | |
| Th. Haagaas, Fredrikshald | |
