| Nonsteinen AS | | 2025 |
| Norda Invest AS | | 2021 |
| Nordbylia 42 AS | | 2021 |
| Nordic Molecule Group AS | Manufacturing | 2008 |
| Nordsjøterminalen AS | Real estate | 2004 |
| Nordskag AS | Professional & scientific | 2016 |
| Nordås Betongform AS | Construction | 2016 |
| Norge Mineraler AS | Mining & quarrying | 1995 |
| Norge Mineraler Development AS | Professional & scientific | 2023 |
| Norge Mineraler Holding AS | Mining & quarrying | 2023 |
| Norgeshus Egersund AS | Construction | 2006 |
| Norgeshus Jæren Eiendom AS | Real estate | 2023 |
| Nornir Eiendomsanalyse AS | Real estate | 2025 |
| Norrøn AS | Real estate | 2009 |
| Norrøn Bolig AS | Construction | 2023 |
| Norrøn Eiendomsutvikling AS | Real estate | 2002 |
| Norrøn Gruppen AS | Real estate | 2011 |
| Norrøn Hus AS | Real estate | 2022 |
| Norrøn Hus Prosjekt AS | Real estate | 2009 |
| Norrøn Leie Til Eie AS | Real estate | 2020 |
| Norrøn Rehabilitering AS | Construction | 2015 |
| North Sea Energy Park AS | Real estate | 2020 |
| North Sea Energy Park II AS | Real estate | 2026 |
| Northlab AS | Professional & scientific | 2023 |
| Norwegian Diligence AS | Professional & scientific | 2017 |
| Nuffen AS | Real estate | 2020 |
| Nygra Holding AS | Real estate | 2013 |
| Nysundkaien AS | Real estate | 2022 |
| O H Bøe & Sønner AS | Wholesale & retail | 2000 |
| O Ognedal & Co Ans | Real estate | 2000 |
| Oasen Eiendom Egersund AS | Wholesale & retail | 2018 |
| Oasen Flora Dekor AS | Wholesale & retail | 2018 |
| Oce Invest AS | Wholesale & retail | 2005 |
| Odd H Torjusen AS | Real estate | 1979 |
| ODH2 AS | Wholesale & retail | 2023 |
| Okkaby AS | Real estate | 2006 |
| Omlid AS | Education | 2022 |
| Ono Holding AS | Professional & scientific | 2009 |
| Onsio AS | Information & communication | 2025 |
| Opplev AS | Information & communication | 2017 |
| Optimal Energi AS | Professional & scientific | 2026 |
| Optimal Funksjon AS | Health & social care | 2021 |
| Oroblanco Invest AS | | 2020 |
| Oseng AS | Professional & scientific | 2005 |
| Ottar Folland AS | Transport & logistics | 2020 |
| P Nodland Invest AS | | 2023 |
| Padiludium AS | | 2025 |
| Padlodden Holding AS | | 2023 |
| Palle Expressen AS | Wholesale & retail | 2012 |
| Paretto AS | Wholesale & retail | 2013 |
| Partnerblikk AS | Construction | 1975 |
| PBH Holding AS | Real estate | 2005 |
| PBH Management AS | Professional & scientific | 2020 |
| Peking-House AS | Hospitality | 2013 |
| Perabuss AS | Wholesale & retail | 2024 |
| Periopro AS | Health & social care | 2023 |
| Perrong Burger AS | Hospitality | 2024 |
| Perrongen AS | Real estate | 2021 |
| Perrongen Eiendom AS | Real estate | 1987 |
| Perrongen Interiør AS | Wholesale & retail | 1998 |
| Pet Holdings AS | | 2024 |
| Pettersen Eiendom AS | Real estate | 1977 |
| Pitlingen AS | Financial services | 2008 |
| PLUG4USS AS | Wholesale & retail | 2026 |
| Postelin AS | Financial services | 2005 |
| Potten AS | | 2024 |
| Prakt Salong AS | Other services | 2017 |
| Prima Blue AS | Manufacturing | 2019 |
| Prima Brands Holding AS | Manufacturing | 2017 |
| Prima Investment AS | Real estate | 2017 |
| Prima Protein AS | Manufacturing | 2017 |
| Prima Protein Holding AS | Manufacturing | 2024 |
| Prima Resort AS | Real estate | 2025 |
| Prima Seafood AS | Manufacturing | 2018 |
| Pro-Tech Tavleverksted AS | Wholesale & retail | 2020 |
| Produksjons Hallen 2 AS | Real estate | 2019 |
| Produksjons Hallen AS | Manufacturing | 2013 |
| Promix Holding AS | Wholesale & retail | 2011 |
| Pronav AS | Wholesale & retail | 1994 |
| Psag Invest AS | | 2024 |
| Psmith Holding AS | | 2024 |
| Pta Invest AS | Financial services | 2010 |
| Pulmonary Vascular Advisory AS | Professional & scientific | 2026 |
| Puls Egersund AS | Arts & recreation | 2006 |
| Påfyll AS | | 2009 |
| Påfyll Mat AS | Wholesale & retail | 2010 |
| Påls Takst & Bygg AS | Professional & scientific | 2023 |
| Qavah Enterprises AS | | 2021 |
| Quintas Trading AS | | 1989 |
| R Hetland Holding AS | Financial services | 2014 |
| R.Nevland AS | Mining & quarrying | 2022 |
| R.V. Holding AS | | 2022 |
| Ragnarock Invest AS | Information & communication | 2024 |
| Ragnarokk AS | Financial services | 2005 |
| Raketten Barnehage SA | Education | 1987 |
| Randen Teknikk AS | Manufacturing | 2019 |
| Rao Invest AS | | 2022 |
| Rasmussen Transport AS | Transport & logistics | 1994 |
| RB. Invest AS | | 2025 |
| RCR Eiendom AS | Real estate | 2021 |