| Mi Investering AS | | 2024 |
| Midtbø Vassverk SA | Water & waste | 1991 |
| Mimar Holding AS | Wholesale & retail | 2000 |
| MK Florø AS | Financial services | 2006 |
| Mls-Invest AS | | 2026 |
| Mo Midtbø Invest AS | | 2026 |
| Mohammed Hamida AS | Transport & logistics | 2021 |
| Morymo Holding AS | Wholesale & retail | 2023 |
| Motornett AS | Wholesale & retail | 2025 |
| MT Crewing AS | Administrative & support | 2025 |
| Mulehavn Bygg AS | Construction | 2005 |
| Munin AS | Agriculture & fishing | 2017 |
| Måsholmen Utvikling AS | Real estate | 2022 |
| Mølster Holding AS | Health & social care | 2020 |
| Nangmai Thaifood Da | Hospitality | 2026 |
| NBN Florø AS | Construction | 1979 |
| NBN Varme AS | Real estate | 2025 |
| NCS Infra AS | Transport & logistics | 2022 |
| Nekkøy Invest AS | Agriculture & fishing | 2005 |
| Nekkøy Marina AS | Real estate | 2023 |
| Nektar AS | Real estate | 1998 |
| Nektra AS | Real estate | 2004 |
| Nesjane 52/76 AS | Real estate | 2024 |
| Nesjane Industripark AS | Real estate | 2024 |
| Nextlayer AS | Professional & scientific | 2025 |
| NHL AS | | 2025 |
| Niprox Holding AS | | 2024 |
| Niprox Technology AS | Water & waste | 2004 |
| NK Eigedom AS | Real estate | 2012 |
| Nor Tekstil AS | Other services | 2005 |
| Norblikk AS | Construction | 1987 |
| Norddalsfjord Storvald SA | Arts & recreation | 2003 |
| Nordica Resort Florø AS | Hospitality | 2009 |
| Nordnesveien 25 Holding AS | Financial services | 2017 |
| Norenta AS | Information & communication | 2026 |
| Norkram AS | Professional & scientific | 2024 |
| Norsk Elektro AS | Construction | 2026 |
| Norsk Inspeksjon AS | Professional & scientific | 2020 |
| Norstrand AS | | 2025 |
| Nortrade AS | Professional & scientific | 1995 |
| Norway Real Estate AS | Real estate | 2005 |
| Norwegian Moon Ans | | 1991 |
| Norwell AS | Wholesale & retail | 1996 |
| Nyborg Industrier AS | Real estate | 2005 |
| Nye Fanafjord AS | Transport & logistics | 2016 |
| Nygård Eiendom AS | Real estate | 1994 |
| Nå Invest AS | Real estate | 2017 |
| Nærøy Marin AS | Administrative & support | 2009 |
| Nærøy Sau Da | Agriculture & fishing | 2011 |
| O. Igland AS | Real estate | 2017 |
| O. Igland Junior AS | Real estate | 2015 |
| Ocean Electronics AS | Wholesale & retail | 1990 |
| Ocean Energy Florø AS | Wholesale & retail | 2026 |
| Odg AS | Wholesale & retail | 2014 |
| Oeb Invest AS | | 2017 |
| Oi Properties AS | Real estate | 2023 |
| Oib Invest AS | Manufacturing | 2005 |
| Om Madsen AS | | 2023 |
| Optivask AS | Other services | 2021 |
| Origod AS | Health & social care | 1975 |
| Origod Fram AS | Health & social care | 2022 |
| Ovat Eiendom AS | Real estate | 2011 |
| Owesen Holding AS | Financial services | 2005 |
| Oxycoccus AS | Financial services | 2018 |
| Panorama Florø AS | Real estate | 2010 |
| Peco Invest AS | Financial services | 2018 |
| Pedro AS | Health & social care | 2000 |
| Pekat Invest AS | Wholesale & retail | 1997 |
| Per Bortheim Dekkservice AS | Wholesale & retail | 2005 |
| Per Bortheim Transport AS | Transport & logistics | 1998 |
| Per Vidar Ottesen AS | Real estate | 2005 |
| Petroleum Services AS | Wholesale & retail | 2003 |
| Pinot Vinbar AS | Hospitality | 2026 |
| Plassen Florø AS | Real estate | 2013 |
| PLS AS | | 2022 |
| Polarny Maritime Invest AS | Real estate | 2005 |
| PP Florø AS | Wholesale & retail | 2013 |
| Primærkontakten for Muskel-Og Skjelettplager AS | Health & social care | 2013 |
| Pro Florø AS | Hospitality | 2020 |
| Pro Stål Construction AS | Construction | 2004 |
| Pro Stål Florø AS | Administrative & support | 2012 |
| Pro Stål Industri AS | Manufacturing | 2025 |
| Proff Service Partner AS | Administrative & support | 2019 |
| Profil Vask AS | Administrative & support | 2026 |
| Progresso AS | Professional & scientific | 2022 |
| Proptonomy AS | Information & communication | 2026 |
| Quick Fish AS | Agriculture & fishing | 2020 |
| R.Fadnes AS | Other services | 2025 |
| Ram.M AS | Professional & scientific | 2015 |
| Ramco Holdings Norway AS | Mining & quarrying | 2018 |
| Ramco Norway AS | Mining & quarrying | 1983 |
| Ramsdal Maskin AS | Construction | 2012 |
| RBR Invest AS | | 2025 |
| Ren C AS | Administrative & support | 2007 |
| Renthjem Florø AS | Administrative & support | 2025 |
| Resonant Kapital AS | | 2025 |
| Retrams AS | Information & communication | 2018 |
| RF G2 38 AS | Wholesale & retail | 2021 |
| Riin Holding AS | | 2025 |
| Riin Invest AS | | 2023 |