| Moldskred AS | Professional & scientific | 1987 |
| Moldskred Marketing AS | Professional & scientific | 2003 |
| Molja AS | Wholesale & retail | 2021 |
| Molja Eiendom AS | Real estate | 2017 |
| Molnes AS | Professional & scientific | 2021 |
| Molo Brew AS | Manufacturing | 2016 |
| Molo Gruppen AS | Health & social care | 2025 |
| Molovegen Eiendom AS | Real estate | 2021 |
| Moloveien AS | Real estate | 1973 |
| Moltech Norge AS | Wholesale & retail | 1979 |
| Moltu-Sperre Invest AS | | 2026 |
| Molvær Holding AS | Arts & recreation | 2022 |
| Moment Forlag AS | Information & communication | 2011 |
| Monark Skomagasin AS | Wholesale & retail | 1960 |
| Monet Ans | Other services | 1992 |
| Moniz AS | Health & social care | 2025 |
| Monks Og Pedersen Eiendom AS | Real estate | 2022 |
| Montering Ålesund AS | Construction | 1996 |
| Montis Eiendom AS | Real estate | 2011 |
| Morad Vest AS | Construction | 2014 |
| Morbø AS | Financial services | 2014 |
| Mordal Transport AS | Transport & logistics | 2012 |
| MORE2C Nordic AS | Real estate | 2025 |
| Morild Interaktiv AS | Information & communication | 2012 |
| Morina AS | Hospitality | 2026 |
| Mork Altenau Invest AS | | 2026 |
| Moro Ålesund AS | Professional & scientific | 2020 |
| Mostein Boligutvikling AS | Real estate | 1995 |
| Mostein Eiendom Holding AS | Real estate | 2005 |
| Mostein Næringsbygg AS | Real estate | 2019 |
| Motbakka Invest AS | | 2020 |
| Motor Forum AS | Wholesale & retail | 2010 |
| Motorsenteret Ålesund AS | Wholesale & retail | 2025 |
| Motregn AS | Professional & scientific | 2018 |
| Motregn Holding AS | Professional & scientific | 2008 |
| Motregn Invest AS | | 2020 |
| Mount Investments AS | | 2021 |
| Mov 1 AS | Real estate | 2023 |
| Mov Invest AS | Real estate | 2005 |
| Mov Solutions AS | Administrative & support | 2023 |
| Movena AS | Professional & scientific | 2014 |
| MP Storkjøkkenservice AS | Manufacturing | 2026 |
| MRB AS | Professional & scientific | 2019 |
| Mrholvik Holding AS | | 2025 |
| Mrloken Invest AS | | 2022 |
| Msport AS | Wholesale & retail | 2020 |
| Muchos Investos AS | Administrative & support | 2020 |
| Multi Kulde Vest AS | Construction | 2015 |
| Multibygg Møre AS | Construction | 2021 |
| Mumrik Invest AS | | 2026 |
| Mumuri AS | Information & communication | 2022 |
| Munchy Ålesund AS | Hospitality | 2025 |
| Muneris AS | Professional & scientific | 2013 |
| Munix AS | Administrative & support | 2019 |
| Mur & Badservice AS | Construction | 2012 |
| Mur & Bygg Ålesund AS | Construction | 2026 |
| Muren AS | Professional & scientific | 2009 |
| Musikktorget AS | Wholesale & retail | 2009 |
| Mustad Havservice AS | Wholesale & retail | 2018 |
| Mvsh & SP Rådgivning AS | Financial services | 2022 |
| Mwo Holding AS | Construction | 2019 |
| My Ride AS | Wholesale & retail | 2023 |
| Mygland Holding AS | | 2024 |
| Myhre Consulting AS | Construction | 2014 |
| Myklebust Teknologi AS | Professional & scientific | 2026 |
| Myld AS | Information & communication | 2015 |
| Mynte Frisører AS | Other services | 2014 |
| Myrdal Eiendom AS | Real estate | 2022 |
| Myren Maskin AS | Construction | 1990 |
| Myrstad Mathus AS | Wholesale & retail | 1990 |
| Myrstad Mathus Holding AS | Wholesale & retail | 2020 |
| Myrstad Media AS | Professional & scientific | 2021 |
| Myrstadgården AS | Real estate | 1990 |
| Myrtels AS | Other services | 2019 |
| Myrull Invest AS | Real estate | 2017 |
| Måløy Kystfiske AS | Agriculture & fishing | 2014 |
| Måløy Opplevelse AS | Wholesale & retail | 2023 |
| Måsøval Sales AS | Wholesale & retail | 2023 |
| Møbelhuset Blindheim AS | Wholesale & retail | 2003 |
| Møbelringen Ålesund AS | Wholesale & retail | 2025 |
| Møbler & Miljø AS | Wholesale & retail | 2016 |
| Møll Holding AS | Professional & scientific | 2020 |
| Møre Blikk AS | Construction | 2022 |
| Møre Bolig AS | Real estate | 2006 |
| Møre Boligkreditt AS | Financial services | 2001 |
| Møre Control AS | Information & communication | 2021 |
| Møre Control Holding AS | Information & communication | 2021 |
| Møre Diesel AS | Wholesale & retail | 2014 |
| Møre Diesel Holding AS | | 2026 |
| Møre Diesel II AS | Wholesale & retail | 2026 |
| Møre Elektro AS | Real estate | 1983 |
| Møre Elektroservice AS | Construction | 2007 |
| Møre Entreprenør AS | Construction | 2013 |
| Møre Entreprenør Bygg AS | Construction | 2024 |
| Møre Entreprenør Holding AS | Construction | 2011 |
| Møre Forsikring AS | | 1996 |
| Møre Havprodukter Ans | Wholesale & retail | 1991 |
| Møre Kompetanse AS | Professional & scientific | 2020 |
| Møre Montering AS | Professional & scientific | 2018 |
| Møre Næringsbygg AS | Real estate | 2010 |