| Mortys Holding AS | | 2018 |
| Mosenteret AS | Real estate | 1992 |
| Mosjøen Industrieiendom AS | Real estate | 2023 |
| Moskjæran Eiendom AS | Real estate | 1998 |
| Motakst AS | Real estate | 2022 |
| Motakst Invest AS | Real estate | 2022 |
| Motorhuset Rana AS | Wholesale & retail | 2009 |
| Motun AS | Real estate | 2006 |
| Mri 697 Holding AS | | 2023 |
| MSD AS | Construction | 2025 |
| Multimix Mo AS | Wholesale & retail | 2000 |
| Multipoint International AS | Construction | 2020 |
| Munin Coffeeroasters AS | Manufacturing | 2017 |
| Murer Rana Ole Og Chris Da | Construction | 1998 |
| Mushroom Crew AS | Construction | 2021 |
| Muskel-Skjelett Fysioterapi Nuf | Health & social care | 2009 |
| Mye I Media AS | Information & communication | 2006 |
| Myhrtua AS | | 2021 |
| Myra 5 AS | Real estate | 2026 |
| Myra H AS | Real estate | 2026 |
| Myra Senter AS | Real estate | 1996 |
| Myravegen 35 AS | Real estate | 2015 |
| Måehvie Eiendom AS | Real estate | 2023 |
| Måvær Holding AS | | 2021 |
| Møgster Holding AS | Professional & scientific | 2020 |
| Nails by Elise AS | Other services | 2019 |
| Naprapat Nina Skogseth Nuf | Health & social care | 2010 |
| Nemko Norlab AS | Professional & scientific | 1989 |
| Nerdal & Thomassen Da | Wholesale & retail | 2009 |
| Nerdal Holding AS | Financial services | 2013 |
| Nerdsoft Ans | Wholesale & retail | 1999 |
| Nermo Eiendom AS | Real estate | 1998 |
| Nermo Legesenter Ans | Health & social care | 1996 |
| Nesnaveien 43 AS | Real estate | 2023 |
| Nesnaveien 49 AS | Construction | 2011 |
| Nesnaveien 53 AS | Real estate | 1998 |
| Nest Aktiv AS | Professional & scientific | 2021 |
| Neste Trinn AS | Professional & scientific | 2018 |
| NHG AS | Professional & scientific | 2021 |
| Nibor Holding AS | | 2020 |
| Nikolaisen Fysioterapi AS | Health & social care | 2015 |
| Nila Ans | | 1988 |
| Nilsen Elektro Installasjon AS | Construction | 2013 |
| Nilsson Mo AS | Construction | 2003 |
| Nina Haaland AS | Financial services | 2010 |
| NN Entreprenør AS | Construction | 2019 |
| Noe I Gjære AS | Manufacturing | 2021 |
| Nogg AS | Real estate | 2008 |
| Nopsa AS | Financial services | 1993 |
| Nor Bo AS | Real estate | 2023 |
| Nord Frisør AS | Other services | 2023 |
| Nord Helse Holding AS | Hospitality | 2019 |
| Nord Industrirør AS | Construction | 2019 |
| Nord Maskin AS | Manufacturing | 1992 |
| Nord Mat Og Catering AS | Hospitality | 2020 |
| Nord Protect Holding Ans | Real estate | 1994 |
| Nord Varmepumpeservice AS | Wholesale & retail | 2018 |
| Nord-Norge Eiendomsmegling A/S | Real estate | 2020 |
| Nord-Norge Eiendomsselskap AS | Real estate | 2023 |
| Nord-Norge Invest AS | Manufacturing | 2023 |
| Nordadvokat AS | Real estate | 2024 |
| Nordahl Griegsgt 10 AS | Real estate | 2006 |
| Nordic Business Invest AS | | 2022 |
| Nordland Data AS | Information & communication | 2017 |
| Nordland Eiendomsselskap AS | Real estate | 2026 |
| Nordland Entreprenør AS | Construction | 2013 |
| Nordland Lås & Sikkerhet AS | Construction | 2021 |
| Nordland Regnskap AS | Professional & scientific | 2021 |
| Nordlandsmat AS | Wholesale & retail | 2010 |
| Nordlysbad AS | Wholesale & retail | 2020 |
| Nordnorsk Naturopplevelse Ans | Administrative & support | 1995 |
| Nordre Eiendom AS | Real estate | 1999 |
| Nordre Gate 3 AS | Real estate | 2022 |
| Nordsia Eiendom AS | Real estate | 1994 |
| Nordtømme Holding AS | | 2021 |
| Nordvang Transport AS | Transport & logistics | 2008 |
| Nordveistjeneste AS | Information & communication | 2024 |
| Nordåsveien 1 AS | Real estate | 1998 |
| Norgarasjen AS | Wholesale & retail | 2022 |
| Norgestak Nordland AS | Construction | 2016 |
| Norrbotten Space AS | Administrative & support | 2020 |
| Norsk Byggstøtte AS | Administrative & support | 2017 |
| Norsk Helse Vikarbyrå AS | Administrative & support | 2017 |
| Norsk Helse Vikarbyrå Nuf | Administrative & support | 2017 |
| Norsk Ildfast Gjenvinning Drift AS | Manufacturing | 2018 |
| Norsk Jernverk AS | Hospitality | 2011 |
| Nortech Industriservice AS | Professional & scientific | 2015 |
| North Inspection Mo I Rana AS | Professional & scientific | 2024 |
| North Media Group AS | Professional & scientific | 2016 |
| Northroads AS | Administrative & support | 2015 |
| Norwegian Renewable AS | Professional & scientific | 2008 |
| NPM Service AS | Manufacturing | 2019 |
| Nye Sportshuset Mo AS | Wholesale & retail | 2020 |
| Nysikt AS | Education | 2012 |
| Nystekt AS | Hospitality | 2025 |
| Nytt Syn AS | Wholesale & retail | 2018 |
| Ocj Holding AS | | 2025 |
| Octopus Events AS | Arts & recreation | 2020 |
| Oculi AS | Health & social care | 2002 |
| Odin Transport AS | Construction | 2022 |