| Minneapolis AS | | 2026 |
| Minntor AS | Real estate | 2014 |
| Minoo BNB AS | Real estate | 2023 |
| Minoo Holding AS | Real estate | 2023 |
| Minor Film AS | Information & communication | 2021 |
| Mint Media AS | Professional & scientific | 2015 |
| Mintra AS | Information & communication | 1986 |
| Mintra Holding AS | Information & communication | 2014 |
| Mintra Trainingportal AS | Information & communication | 2012 |
| Minus Minus AS | | 2018 |
| Mioratina Nomenjanahary Tanteliniaina AS | Information & communication | 2025 |
| Miphic AS | Professional & scientific | 2022 |
| Mir AS | Professional & scientific | 2024 |
| Mirsi AS | Education | 2014 |
| Misje Bulk AS | Transport & logistics | 2004 |
| Misje Chartering AS | Transport & logistics | 2015 |
| Misje Ecobulk AS | Transport & logistics | 2020 |
| Misje Eiendom AS | | 2023 |
| Misje Rederi AS | Transport & logistics | 1982 |
| Misje Ship Holding AS | Transport & logistics | 1997 |
| Missi Holding AS | Financial services | 2015 |
| Mistral Digital AS | Education | 2012 |
| Mistrol AS | Professional & scientific | 2023 |
| Mito Biotech AS | Agriculture & fishing | 2015 |
| Mito Innovation AS | Professional & scientific | 2025 |
| Mitral AS | Real estate | 2014 |
| Mittegetlokale Vestland AS | Real estate | 2019 |
| Miva Eiendom AS | Real estate | 2017 |
| MJ Hårklau Invest AS | Financial services | 2012 |
| MJK Holding AS | | 2025 |
| MJW Holding AS | Professional & scientific | 2025 |
| Mjåtveitflaten 55 AS | Real estate | 2010 |
| Mjåtveitstø AS | Real estate | 2016 |
| Mjåvannsvegen 186 AS | Real estate | 2022 |
| Mjølnr AS | | 2024 |
| Mki-Invest AS | Professional & scientific | 2005 |
| MKM Invest AS | Construction | 2005 |
| MLG Propeteer Europe AS | | 2012 |
| MLM Holding AS | | 2026 |
| Mly AS | | 2023 |
| MM62 Holding AS | | 2026 |
| Mnei AS | Professional & scientific | 2021 |
| MNG Allehelgensgate 2 AS | Real estate | 2003 |
| MNG Espehaugen 32 AS | Real estate | 2007 |
| MNG Grønnesmauet 3 AS | Real estate | 1982 |
| MNG Holding Bergen AS | Real estate | 2020 |
| MNG Johan Berentsensvei 4 AS | Real estate | 2019 |
| MNG Jonas Reinsgate 3 AS | Real estate | 1992 |
| MNG Kaigaten AS | Real estate | 2009 |
| MNG Leirvikflaten 17 AS | Real estate | 2021 |
| MNG Leirvikåsen AS | Real estate | 2021 |
| MNG Saksarlia 4 AS | Real estate | 1992 |
| MNG Skulestadmo AS | Real estate | 2020 |
| MNG Torvalmenningen 9 AS | Real estate | 1928 |
| MNG Welhavensgate 80 AS | Real estate | 2007 |
| Moag Invest AS | Professional & scientific | 2012 |
| Moberg Næringseiendom AS | Real estate | 2025 |
| Mobilhjelpen AS | Other services | 2015 |
| Mobilitetsparken Eiendomsinvest AS | Real estate | 2019 |
| Mobilkjeden AS | Wholesale & retail | 2015 |
| Mobilxpressen AS | Wholesale & retail | 2013 |
| Mobra Invest 2 AS | | 2024 |
| Mobra Invest AS | | 2015 |
| Moco Holding AS | Real estate | 2005 |
| Modahl Art Norway AS | Arts & recreation | 2021 |
| Modellstrikk AS | Wholesale & retail | 2019 |
| Modesta Mat AS | Hospitality | 2021 |
| Modhus AS | Construction | 2020 |
| Modiere Holding AS | Wholesale & retail | 2014 |
| Modtech AS | Wholesale & retail | 2020 |
| Mohe AS | | 2024 |
| Mohn Kunsthandel AS | Wholesale & retail | 2000 |
| Molbow AS | Hospitality | 2022 |
| Moldbakken 49 AS | Real estate | 2023 |
| Moldeklev AS | Construction | 2015 |
| Mollbakken 1 - 7 AS | Households | 1956 |
| Mollyosa AS | Information & communication | 2015 |
| Molløe Optimal AS | Real estate | 2018 |
| Molløesmauet 1 AS | Real estate | 2016 |
| Molløesmauet 3 Eiendom AS | Real estate | 2018 |
| Molløesmauet Holding AS | Real estate | 2015 |
| Molnes Invest Og Eigedom AS | | 2023 |
| Moment Gruppen AS | | 2022 |
| Momentum Capital AS | Financial services | 2020 |
| Momentum Capital III AS | Financial services | 2023 |
| Momentum II AS | Financial services | 2019 |
| Momentum III AS | Financial services | 2023 |
| Momentum Invest & Holding AS | Professional & scientific | 2013 |
| Momentum Partners AS | Professional & scientific | 2013 |
| Momentum Venture Management AS | Financial services | 2017 |
| Momu Holdings AS | | 2022 |
| Mon Plaisir AS | | 2022 |
| Monarchy Studio AS | Other services | 2016 |
| Monclair AS | Financial services | 2015 |
| Monkey Bytes AS | Information & communication | 2013 |
| Monoart AS | Wholesale & retail | 2011 |
| Monsieur Scabal AS | Wholesale & retail | 1982 |
| Montag AS | Professional & scientific | 2013 |
| Montem AS | Real estate | 2006 |
| Monterosa AS | | 2022 |