| Ollie AS | Professional & scientific | 2026 |
| Oo-Invest AS | | 2025 |
| Opdahl Solutions Ltd Nuf | Construction | 2010 |
| Opdan AS | | 2019 |
| Optiker Ramstad AS | Wholesale & retail | 1980 |
| Or Bergersen Holding AS | Construction | 2021 |
| Ottar Bergersen & Sønner AS | Construction | 2021 |
| Ovik Eiendom AS | Real estate | 2019 |
| P Steiro Holding AS | Wholesale & retail | 2005 |
| Partner Industriemontage GmbH & Co. KG | Manufacturing | 2009 |
| Pe Invest AS | Real estate | 2005 |
| Pedersen Naboservice AS | Wholesale & retail | 2021 |
| Pedersen Trafikkskole AS | Education | 2024 |
| Persa Invest AS | Real estate | 2005 |
| Petof AS | | 2020 |
| Petroleum Eiendom AS | Real estate | 2017 |
| Pettersen Skjell Da | Agriculture & fishing | 2001 |
| Plastterminalen AS | Water & waste | 2023 |
| PNF AS | Information & communication | 2020 |
| Polaris Crew AS | Administrative & support | 1994 |
| Polljordveien Samvirkeforetak | Real estate | 1988 |
| Power Farming AS | Manufacturing | 1998 |
| Power Farming Holding AS | Real estate | 2019 |
| Pp-Invest AS | | 2025 |
| Prestelva Barnehage SA | Education | 1992 |
| Prima Eiendommer AS | | 1997 |
| Pro-Fio Wirtschaftsselbstihlfe | Administrative & support | 2009 |
| Problemfix Dataservice AS | Information & communication | 2012 |
| Profi Serv L Schottdorf | Professional & scientific | 2008 |
| Promedica Helse AS | Other services | 2015 |
| Pronoid AS | | 2025 |
| Pukk Og Gjenvinning AS | Mining & quarrying | 2024 |
| Pål Steiro Eiendom AS | Wholesale & retail | 1993 |
| Rak- Holding AS | Real estate | 2005 |
| Ramnkloa AS | Real estate | 2007 |
| Ramona Lind AS | Other services | 2024 |
| Rampelys AS | Information & communication | 1986 |
| Rapportly AS | Information & communication | 2026 |
| RCH25 AS | | 2024 |
| Redskapsretur AS | | 2026 |
| Reierth Invest AS | Financial services | 2017 |
| Reinsnes Vann SA | Water & waste | 2016 |
| Remen-Hansen AS | | 2025 |
| Renmax Servicesystem AS | Administrative & support | 1999 |
| Reno-Vest Bedrift AS | Water & waste | 2001 |
| Reno-Vest Bremnes AS | Water & waste | 2013 |
| Reno-Vest Produksjon AS | Water & waste | 2013 |
| Renovai AS | Information & communication | 2023 |
| Revicom AS | Professional & scientific | 1982 |
| Rgi Analyse AS | Information & communication | 2023 |
| Rh-Eiendom AS | Real estate | 2019 |
| Rhholding AS | Real estate | 2020 |
| Rho AS | Other services | 2014 |
| Rignator AS | Transport & logistics | 2018 |
| Rise Eiendom AS | Manufacturing | 2020 |
| Rising AS | Real estate | 2013 |
| RKP Invest AS | | 2018 |
| Robertsen Eiendom AS | Construction | 2000 |
| Robertsen Invest AS | Construction | 2004 |
| Robra Kystdrift AS | Agriculture & fishing | 2026 |
| Robø AS | | 2019 |
| Rofra Invest AS | Real estate | 2003 |
| Romset Båthavn Da | Arts & recreation | 2024 |
| RSK Steigen AS | | 1992 |
| Rubens Aksjer AS | | 2025 |
| Rund Holding AS | | 2023 |
| Rune Hilde Invest AS | Health & social care | 2005 |
| Rune Teigen Holding AS | | 2021 |
| Ræka AS | Agriculture & fishing | 2016 |
| Rødli Invest AS | | 2025 |
| Røkenes Havn SA | Transport & logistics | 2007 |
| Røkenes Maskin AS | Mining & quarrying | 2002 |
| Rørlegger Tom Eilertsen AS | Construction | 2011 |
| S&K Eiendom AS | Real estate | 2012 |
| S. Frosch Bausanierung | Construction | 2008 |
| Sa-Driv AS | Professional & scientific | 2021 |
| Sa-Kompetanse AS | Health & social care | 2021 |
| Sa-Produksjon AS | Health & social care | 2021 |
| Sa.Bygg AS | Construction | 2024 |
| Saj AS | | 2025 |
| Sak Holding AS | Other services | 2012 |
| Sakura Lofoten Sortland AS | Hospitality | 2022 |
| Salong 2000 Sortland AS | Other services | 2002 |
| Salong Afrodite AS | Other services | 2003 |
| Sandø & Toften Fysioterapi AS | Health & social care | 2022 |
| Sanshytter AS | Professional & scientific | 2007 |
| SB Drift AS | Manufacturing | 2025 |
| Scolopax Eiendom AS | Real estate | 2009 |
| Scolopax Invest AS | Real estate | 2008 |
| Se-Byggservice AS | Construction | 1992 |
| Sec Invest AS | Real estate | 2005 |
| See Vesterålen AS | Administrative & support | 2020 |
| Seger Akustik & Trockenausbau GmbH | Construction | 2008 |
| Sem Holding AS | Hospitality | 1986 |
| Set-Invest AS | | 2025 |
| Seterveien Skogsveiforening Ba | Real estate | 2007 |
| Sfmt Eiendom AS | Real estate | 2017 |
| Sg-Invest AS | | 2025 |
| Sh-Maskin AS | Construction | 2016 |
| Shiftborn Studios AS | Information & communication | 2025 |