| Pilskog Invest AS | Skodje | 2021 |
| Pimp AS | Eidsvoll | 2015 |
| Pinnacle Car Carriers AS | Oslo | 2022 |
| Pinnacle Shipowning 1 AS | Oslo | 2022 |
| Pinnacle Shipowning 2 AS | Oslo | 2022 |
| Pinnacle Shipowning 3 AS | Oslo | 2022 |
| Pinnacle Shipowning 4 AS | Oslo | 2022 |
| Pinnacle Shipowning 5 AS | Stavanger | 2026 |
| Pinnacle Shipowning 6 AS | Stavanger | 2026 |
| Pinpoint Logistics AS | Hvalstad | 2024 |
| Pioneer Eco Bulker AS | Oslo | 2024 |
| Pioneer Eco Bulker II AS | Oslo | 2025 |
| Piotr Makowski F.H. | Pl-73-110 Stargard Szczecinski | 2020 |
| Pirtaxi AS | Fjellhamar | 2025 |
| Pizza På Hjul Da | Stathelle | 1988 |
| PK Consulting Da | Oslo | 2006 |
| PK Shipping AS | Oslo | 2007 |
| Plast-Transport AS | Vartdal | 1987 |
| Platinum AS | Fjerdingby | 2022 |
| Platinum Services AS | Oslo | 2025 |
| Plexus Ocean Systems Limited | Ab21 0Hw Aberdeen | 2009 |
| Pleyms Transport AS | Vadsø | 1983 |
| Plug Larvik AS | Larvik | 2024 |
| Plug Nordfjord AS | Nordfjordeid | 2021 |
| Plug Vågan AS | Svolvær | 2023 |
| Plukk AS | Bergen | 2018 |
| PM Utleie AS | Averøy | 2017 |
| Pmb-Holding AS | Oppaker | 2014 |
| PMP Trading AS | Mogreina | 2012 |
| PMP Transport SP. Zo.O. SP. Komandytowa | Pl-81241 Gdynia | 2020 |
| PMT Cargo Smartpoint Norway Nuf | Skedsmokorset | 2019 |
| PNR Transport AS | Raufoss | 2025 |
| Poga 2000 Aps Ltd | London Ec1V 2Nx England | 2020 |
| Polar Barge AS | Sarpsborg | 2021 |
| Polar Cruising Spitsbergen AS | Longyearbyen | 2021 |
| Polar Energy AS | Bergen | 2024 |
| Polar Energy Opco AS | Bergen | 2024 |
| Polar Energy Shipco AS | Bergen | 2024 |
| Polar Explorer AS | Bergen | 1994 |
| Polar Helsetransport AS | Bodø | 2023 |
| Polar Holding Bodø AS | Rognan | 2005 |
| Polar Lift AS | Rypefjord | 2007 |
| Polar Taxi AS | Hakadal | 2025 |
| Polar Thermo AS | Tromsø | 2023 |
| Polar Tours AS | Bodø | 2022 |
| Polar Transport AS | Sarpsborg | 2013 |
| Polar Viking AS | Tromsø | 2010 |
| Polarbase Eiendom AS | Rypefjord | 1984 |
| Polarcirkelen Båthotell AS | Selsøyvik | 2018 |
| Polarcirkelen Båttransport AS | Selsøyvik | 2000 |
| Polarfrakt AS | Bjerkvik | 2022 |
| Polarhavna SA | Tromsø | 1997 |
| Polaris Aviation AS | Nøtterøy | 2021 |
| Polaris Distribusjon Midt-Norge AS | Heimdal | 2001 |
| Polaris Distribusjon Nord-Norge AS | Harstad | 2005 |
| Polaris Distribusjon Nordvestlandet AS | Ålesund | 2008 |
| Polaris Distribusjon Sør AS | Arendal | 1998 |
| Polarline OY | Fi-90400 Oulu | 2012 |
| Polartrans AS | Mo I Rana | 2002 |
| Polarus AS | Bergen | 2005 |
| Polbuss AS | Oslo | 2013 |
| Pole Position Logistics AS | Longyearbyen | 2005 |
| Pollen P-Hus AS | His | 2011 |
| Polskie Linie Lotnicze Lot Nuf | Frogner | 2018 |
| Polyar Tankers AS | Oslo | 2000 |
| Polycrest AS | Tananger | 2012 |
| Pomer AS | Paradis | 2019 |
| Ponneswaran AS | Nordby | 2026 |
| Pontos Marine AS | Karmsund | 1995 |
| Pop-Up Taxi AS | Jessheim | 2026 |
| Popa Transport AS | Tolvsrød | 2026 |
| Porsgrunn Taxi AS | Porsgrunn | 2022 |
| Port and Terminal Services S.C. | Pl-83-010 Straszyn | 2016 |
| Port Flow AS | Porsgrunn | 2025 |
| Port Supply Services AS | Oslo | 1987 |
| Portaas & Sønn AS | Skotselv | 2005 |
| Portal AS | Grimstad | 2024 |
| Porter AS | Oslo | 2016 |
| Porterbuddy Norge AS | Oslo | 2019 |
| Porterservice AS | Oslo | 2007 |
| Porterteam Da | Nesttun | 2000 |
| Post Danmark AS | 1566 København V | 2010 |
| Post I Heggedal AS | Heggedal | 2020 |
| Posten & Bring Holding 1 AS | Oslo | 2019 |
| Posten & Bring Holding 2 AS | Oslo | 2019 |
| Posten Bring AS | Oslo | 2002 |
| Posten Bring Bildrift AS | Oslo | 1996 |
| Posten Bring Varebil AS | Oslo | 2025 |
| Posten Eiendom Kristiansand I AS | Oslo | 2010 |
| Posten Eiendom Robsrud AS | Oslo | 2006 |
| Posti Logistics Solutions AS | Våle | 2003 |
| Postnord AS | Oslo | 2001 |
| Postnord Sverige AB | Se-105 00 Stockholm | 2015 |
| Postnord Terminal Bergen AS | Oslo | 2012 |
| Postnord Terminal Drammen AS | Sande I Vestfold | 2018 |
| Postnord Terminal Langhus AS | Oslo | 2006 |
| Postnord Terminal Trondheim AS | Oslo | 2007 |
| Postnord TPL AB | Se-171 73 Solna | 2010 |
| Poudel & Company AS | Oslo | 2025 |
| Pourshins Limited | Gb-Tw15 1Tz Middlesex | 2016 |