| Okj Holding AS | Professional & scientific | 2019 |
| Oksfjellelv Holding AS | Real estate | 2022 |
| Oksfjellelv Invest AS | Construction | 2023 |
| Olav Brattland Drift AS | Construction | 2014 |
| Olav Brattland Eiendom 2 AS | Construction | 2017 |
| Olav Brattland Eiendom 3 AS | Real estate | 2018 |
| Olav Brattland Eiendom AS | Construction | 2014 |
| Olav Brattland Holding AS | Construction | 2014 |
| Olje Partner Nor AS | Wholesale & retail | 2000 |
| Oljepartner Nord Eiendom AS | Real estate | 2001 |
| Olsen Dekk & Felg AS | Wholesale & retail | 2018 |
| One Legacy AS | Wholesale & retail | 2022 |
| Opdahl Eiendom AS | | 2018 |
| Oppsving Eiendom AS | Real estate | 2019 |
| Optimogården AS | Real estate | 2006 |
| Ospas AS | Construction | 2003 |
| Oto Holding AS | Real estate | 2016 |
| P Myrvang Holding AS | | 2026 |
| P. Fjellstad AS | Professional & scientific | 2026 |
| Pa Rør AS | Construction | 2005 |
| Pag AS | Professional & scientific | 2026 |
| Parfymeriet Folk AS | Wholesale & retail | 2012 |
| Pasyc AS | Information & communication | 2023 |
| Patrik Larsson Holding AS | Real estate | 2020 |
| PB 688 Holding AS | | 2023 |
| PDR Studio AS | Other services | 2025 |
| Pebra AS | Construction | 2005 |
| PEDERS1 Hage Og Uteareal Vedlikehold AS | Administrative & support | 2022 |
| Pedru Invest AS | | 2025 |
| Pekir AS | Professional & scientific | 2026 |
| Penumbra Holding AS | | 2021 |
| Pep Invest AS | Real estate | 2005 |
| Per Venes Kranservice AS | Construction | 1992 |
| Perse AS | Hospitality | 2014 |
| PG Tryggestad Holding AS | | 2023 |
| Phasit AS | Information & communication | 2022 |
| Pia Olsen Manuellterapi AS | Health & social care | 2019 |
| Picture&Stories AS | Professional & scientific | 2023 |
| Planbygget Mosjøen AS | Real estate | 2005 |
| Pluss Mat AS | Hospitality | 2023 |
| PMV AS | Manufacturing | 2018 |
| Polar Bygg AS | Construction | 2019 |
| Polar Storkjøkken AS | Other services | 2024 |
| Polardekk AS | Wholesale & retail | 2015 |
| Polareiendom AS | Real estate | 2012 |
| Polarfakta AS | Administrative & support | 2003 |
| Polarkran AS | Construction | 2012 |
| Polarservice AS | Wholesale & retail | 2022 |
| Polarsirkelen AS | Professional & scientific | 2019 |
| Polarsirkelen Eiendomsmegling AS | Real estate | 2023 |
| Polarsirkelen Forsikring AS | Financial services | 2012 |
| Polarsirkelen Lufthavnutvikling AS | Professional & scientific | 2007 |
| Polarsirkelen Mekaniske AS | Wholesale & retail | 2019 |
| Polarsirkelen Rørteknikk AS | Construction | 2021 |
| Polarsirkelen Takst & Byggekontroll AS | Professional & scientific | 2016 |
| Polarsirkelen Trafikkskole AS | Education | 2010 |
| Polartrans AS | Transport & logistics | 2002 |
| Pomalo AS | Hospitality | 2023 |
| PR Holding AS | Real estate | 2005 |
| Prakt Eiendom AS | Real estate | 2017 |
| Pri-Systemer AS | Information & communication | 2023 |
| Primalgear AS | Wholesale & retail | 2026 |
| Pro. Eiendom AS | Real estate | 2018 |
| Prodeco AS | Professional & scientific | 2013 |
| Proff Bygg Rana AS | Construction | 2016 |
| Progressive Film AS | Information & communication | 2008 |
| Prolink Eiendom AS | Real estate | 2017 |
| Prolink Holding AS | Manufacturing | 2017 |
| Prolink International AS | Manufacturing | 2002 |
| Proscindo AS | | 2026 |
| Protagonisten AS | | 2023 |
| Protekk Entreprenør AS | Construction | 2016 |
| PRT Holding AS | | 2026 |
| Prunus Holding AS | Administrative & support | 2019 |
| PRV AS | Professional & scientific | 2016 |
| Pstt Holding AS | | 2021 |
| Psupply AS | Administrative & support | 2016 |
| Pust Hud & Fotpleie AS | Other services | 2024 |
| Pustlivet AS | Education | 2022 |
| Pyronor AS | | 2022 |
| R D S AS | Construction | 2018 |
| Raa-Holding AS. | | 2023 |
| Rabc AS | Construction | 1998 |
| Rabg AS | Construction | 2016 |
| Radix Utleie AS | Administrative & support | 2026 |
| Raki Eiendom AS | Real estate | 1995 |
| Ramsengbygg AS | Other services | 1994 |
| Ramsengs Auto AS | Other services | 1996 |
| Rana Autosenter Ans | Wholesale & retail | 1979 |
| Rana Bilopphugging AS | Wholesale & retail | 1996 |
| Rana Bilservice AS | Other services | 2010 |
| Rana Bygg AS | Construction | 2016 |
| Rana Caravansenter AS | Wholesale & retail | 2006 |
| Rana Eiendom AS | Real estate | 2006 |
| Rana Entreprenør AS | Construction | 1988 |
| Rana Fjellguiding Da | Administrative & support | 1996 |
| Rana Fysikalske Institutt for Manuell Terapi Ans | Health & social care | 2005 |
| Rana Golfsenter AS | Arts & recreation | 2026 |
| Rana Gruber AS | Mining & quarrying | 1989 |
| Rana Holding AS | Real estate | 1982 |