Vi har så langt registrert 19 632 rederier
| Navn | Grunnlagt | | Th. Børnick, Bergen | |
| Th. Capjon, Drammen | |
| Th. Clausen, Arendal | |
| Th. Davidsen & Co. Kristiania | |
| The Adelade Steam Ship Co. Ltd. Melbourne | |
| The Admirality, UK | |
| Th. Ebbesen, Tønsberg | |
| The Clan Line Steamer Ltd., Glasgow | |
| The Eastern Shipping, Oslo, Norge | |
| The Eastern Shipping v/ Roy Engelstad, Oslo | 1939 |
| The Freemantle Whaling Co.Ltd.(Chr.Nilsen & Co) | |
| The Green Tankers A/S, Oslo | |
| The Heirs of the late Michael J. Goulandris Bros. | |
| Theisen,Karl & Oskar Knudsen, Korshavn | |
| Theisen,Karl, Sælør | |
| Theisens Enke, T.C.,Spind | |
| Theisen,Theis Abraham, Spind | |
| Theisen,Theis, Spind | |
| Theisen, Østen, Austad | |
| Theis Jacobi Torkildsen, Lundegaard, Spind, Farsund | |
| Theis J. Haalvig, Spangereid | |
| Theis Lundgård, Lillesand | |
| Theis Rasmussen, Bugdø | |
| Theis Salvesen, Farsund | |
| Theis Salvesen, Lyngdal | |
