| Molo Kids Norway AS | Wholesale & retail | 2011 |
| Molund Invest AS | | 2020 |
| Monogram AS | Professional & scientific | 2015 |
| Monolitten AS | Real estate | 2025 |
| Morpol Invest AS | | 2006 |
| Mortek AS | Wholesale & retail | 2003 |
| Move-It Consulting AS | Information & communication | 2020 |
| Mow Skoagentur AS | Wholesale & retail | 2017 |
| Moøst Holding AS | Financial services | 2005 |
| MPS Bilskade Fornebu AS | Other services | 2019 |
| MRP Harrami Holdings 1 AS | Professional & scientific | 2025 |
| MRP Sunny Corner Holdings 1 AS | Professional & scientific | 2025 |
| MSL Cabling AS | Construction | 2026 |
| MSL Cabling Limited Nuf | Construction | 2024 |
| MSL Labour AS | Construction | 2026 |
| Munum Holding AS | Professional & scientific | 2018 |
| Musti AS | Real estate | 2005 |
| Møbl AS | Construction | 2026 |
| Møst AS | Professional & scientific | 2014 |
| Nae-Holding AS | | 2024 |
| Nan Madol AS | Arts & recreation | 1999 |
| Nansenløkka Utvikling AS | Real estate | 2018 |
| Nansenløkka Utvikling K3-K6 AS | Real estate | 2023 |
| Naseas Holding AS | | 2021 |
| Naxs Nordic Access Buyout AS | | 2006 |
| Neat Holdings AS | | 2020 |
| Neatframe AS | Information & communication | 2018 |
| Nec - Nordic Energy Company AS | Professional & scientific | 2022 |
| Nedre Skøyen Vei Newco AS | Real estate | 2021 |
| Need IT AS | Professional & scientific | 2020 |
| Nes Fircroft AS | | 2023 |
| Nes Fircroft Bondco AS | Administrative & support | 2021 |
| Neske AS | | 2023 |
| Netaccount Regnskap AS | Information & communication | 2012 |
| New Energy Systems AS | Professional & scientific | 1998 |
| New Feet Medical Footwear AS | Wholesale & retail | 2010 |
| Next to You AS | Wholesale & retail | 2002 |
| NF Group AS | Wholesale & retail | 2012 |
| Nha Invest AS | | 2024 |
| NHO001 AS | Professional & scientific | 2016 |
| Nia Lapansi AS | Wholesale & retail | 2019 |
| Nia Lapansi Group AS | Information & communication | 2026 |
| Niho Invest AS | | 2026 |
| Nilfat AS | Real estate | 2015 |
| Nina Harreschou | Administrative & support | 2013 |
| Nina Lindstad AS | Health & social care | 2016 |
| Niwi Invest AS | | 2021 |
| Niwi Miljøtiltak AS | Administrative & support | 1992 |
| Noba Bank Group AB (Publ) Nuf | Financial services | 2016 |
| Noema Holdings AS | Information & communication | 2026 |
| Nokia Solutions and Networks Norge AS | Information & communication | 2006 |
| Nokia Solutions and Networks OY | Wholesale & retail | 2006 |
| Norag Invest AS | | 2021 |
| Nordahl Gruppen AS | Information & communication | 2026 |
| Nordavindar Offshore Wind AS | Energy | 2020 |
| Nordic Energy Solutions AS | Wholesale & retail | 2023 |
| Nordic K9 Conditioning AS | Education | 2025 |
| Nordic Venture AS | Professional & scientific | 2010 |
| Nordisk Eiendomspartner AS | Real estate | 2014 |
| Nordlie Spesialistpraksis AS | Health & social care | 2022 |
| Nordr AS | Real estate | 2019 |
| Nordr Bolig AS | Real estate | 2009 |
| Nordr Holding AS | Real estate | 2020 |
| Nordr Midco AS | Real estate | 2020 |
| Nordr Norge AS | Real estate | 1984 |
| Norlandia Sjøflyhavna AS | Education | 2015 |
| Normandie Invest AS | Financial services | 2003 |
| Norperformance AS | | 2014 |
| Norsk Pro AS | Health & social care | 2017 |
| North Drift AS | | 2023 |
| North Private Equity AS | Wholesale & retail | 2022 |
| Northstar Architects AS | Professional & scientific | 2023 |
| Norwegian Backend Systems AS | Information & communication | 2026 |
| Norwegian Edtech Design AS | Information & communication | 2017 |
| Norwegian Fashion Center AS | Real estate | 2016 |
| Norwegian Trade Con AS | Professional & scientific | 1990 |
| Nov Process & Flow Technologies AS | Mining & quarrying | 2016 |
| Nova Apac Holdings AS | Professional & scientific | 2025 |
| Nova Australia Holdings AS | Professional & scientific | 2025 |
| Nova Holdings AS | Energy | 2025 |
| Nova Nordic Capital AS | Real estate | 2026 |
| Nova South Africa Holdings AS | Professional & scientific | 2025 |
| Novolux Nuf | Wholesale & retail | 2010 |
| Novura AS | Information & communication | 2026 |
| Nscale Norway Holdings AS | | 2025 |
| Nsslglobal AS | Information & communication | 2007 |
| Nuseva AS | Professional & scientific | 2016 |
| Nye Show De Vida AS | Arts & recreation | 2025 |
| Obos Fornebu AS | Real estate | 2000 |
| Obos Koksa AS | Real estate | 2007 |
| Ocg Holding AS | Wholesale & retail | 2015 |
| Oksenøya Bryggesamvirke 1 SA | Real estate | 2017 |
| Oksenøya Båtutstyr AS | Wholesale & retail | 2022 |
| Olise Holding AS | Professional & scientific | 2015 |
| Omeka AS | | 2019 |
| Omnimod AS | Professional & scientific | 2020 |
| Omnimod Norge AS | Professional & scientific | 2025 |
| Omnimod Norge Drift AS | Information & communication | 2025 |
| Omnipartner AS | Professional & scientific | 2024 |
| One Ecit Employee Invest AS | | 2026 |