We have so far registered 19,632 shipping companies
| Name | Founded | | Petroleum. Geo Service A/S, Trondheim | |
| Petroleum Geo-Services Asia Pacific Pte Ltd, Singapore | |
| Petroleum Shipping Co. Ltd. ,Panama | |
| Petrotank A/S, Høvik / Oslo | |
| Petrotrym A/S, Trondheim | |
| Petrus Johannesen, Kristiansand | |
| Petter Andersen, Sandefjord | |
| Petter Anderssen, Valsøyfjord, Kristiansund | |
| Petter Andresen, Sandefjord | |
| Petter A. Pettersen, Risør | |
| Petter Appelsvold, Tjøme, Tønsberg | |
| Petter Arntzen, Bodø | |
| Petter Berg A/S, Senja | |
| Petter Bj. Vestre, Vatne, Ålesund | |
| Petter Grønner, Fredrikstad | |
| Petter Gudevang, Oslo | |
| Petter I. Jacobsen, Arendal | |
| Petter J. Aakre, Haramsøy | |
| Petter Johansen, Sortland | |
| Petter Josef Andersen, Fredrikstad | |
| Petter Juel Bie, Grimstad | 1800 tallet |
| Petter Juel Bies bo m.fl. Grimstad | |
| Petter K. Sævik, Remøy, Ålesund | |
| Petter & Lars Berge, Ølensvåg | |
| Petter Larsen & Co, Kristiania | |
