| Merkbar AS | Hospitality | 2005 |
| Merverdi Bygg AS | | 2023 |
| Merverdi Consulting AS | | 2024 |
| Merverdi Drift AS | Professional & scientific | 2024 |
| Merverdi Ef Motor Invest AS | | 2024 |
| Merverdi Eiendom AS | Real estate | 2022 |
| Merverdi Energi AS | | 2022 |
| Merverdi Finans AS | | 2022 |
| Merverdi Hyrt Invest AS | | 2022 |
| Merverdi Industri AS | | 2025 |
| Merverdi Invest AS | Professional & scientific | 2024 |
| Merverdi Investor AS | Professional & scientific | 2024 |
| Merverdi Kapital AS | Financial services | 2021 |
| Merverdi Kapitalforvaltning AS | Financial services | 2021 |
| Merverdi Logistikk AS | | 2023 |
| Merverdi Morene Invest AS | | 2024 |
| Merverdi Partners AS | Professional & scientific | 2024 |
| Merverdi Regnskap AS | | 2025 |
| Merverdi Start 26 AS | | 2026 |
| Merverdi Start 27 AS | | 2026 |
| Merverdi Start 28 AS | | 2026 |
| Merverdi Start 29 AS | | 2026 |
| Merverdi Start 30 AS | | 2026 |
| Merverdi Vekst AS | Real estate | 2010 |
| Mesa Bjørnsen Invest AS | | 2025 |
| Mesencephalon AS | | 2023 |
| Mesna Senter AS | Real estate | 2016 |
| Messel AS | | 2026 |
| Messeutstyr AS | Administrative & support | 2017 |
| Messmer Bolig AS | Real estate | 2022 |
| Messmer Invest AS | Real estate | 2006 |
| Mestad Holding AS | Real estate | 2017 |
| Mestertakst AS | Professional & scientific | 2005 |
| Metacortex AS | | 2021 |
| Metal and Steel Supply AS | Wholesale & retail | 2001 |
| Metall Consulting AS | | 2021 |
| Metamorf Arkitektur AS | Professional & scientific | 2015 |
| Metamorphic AS | Professional & scientific | 2019 |
| Metis Privatistskole Stavanger AS | Education | 2024 |
| Metis Privatlærer Stavanger AS | Education | 2024 |
| Metopi AS | Wholesale & retail | 2023 |
| Metroinvest AS | Financial services | 2005 |
| Mette Hiorth Holding AS | | 2026 |
| Mette Wergeland AS | Real estate | 2005 |
| Meze Restaurant AS | Hospitality | 2020 |
| MG Holdco AS | Real estate | 2023 |
| MG Link AS | Real estate | 2022 |
| MG Southhome AS | Professional & scientific | 2018 |
| MH Family AS | | 2010 |
| MH Invest AS | Other services | 2019 |
| MH Tech AS | Professional & scientific | 2021 |
| Mhatre Engineers & Inspektion AS | Professional & scientific | 2017 |
| MHM Transport Flyttebyrå AS | Transport & logistics | 2024 |
| MHS Arkitektur & Design AS | Professional & scientific | 2020 |
| Mhsg 1 AS | Transport & logistics | 2025 |
| MHT Services AS | Administrative & support | 2024 |
| Mi Hermes Holding 1 AS | | 2023 |
| Mibo Bolig AS | Construction | 2024 |
| Michaelsen AS | | 2020 |
| Micnola AS | | 2014 |
| Micro Kaffi AS | Wholesale & retail | 2020 |
| Microlino Norge AS | Wholesale & retail | 2025 |
| Mida Invest AS | Real estate | 2006 |
| Midbøe AS | Construction | 1989 |
| Midbøe Investment AS | | 2024 |
| Midbøe Lunde Holding AS | | 2024 |
| Middborg Invest AS | | 2022 |
| Middelthon Engros AS | Wholesale & retail | 1996 |
| Middelthon Investering AS | Real estate | 2017 |
| Middelthon Rental Homes AS | Real estate | 2005 |
| Midgard Infra AS | Information & communication | 2019 |
| Midgard Infra Holding AS | | 2025 |
| Midgard Infra Holding II AS | | 2025 |
| Midnight Hill AS | Information & communication | 2025 |
| Midsummer AS | Manufacturing | 2016 |
| Midt Norge Energistasjon AS | Wholesale & retail | 2023 |
| Midtgårdveien 12 AS | | 2016 |
| Midtgårdveien 16 AS | Real estate | 2022 |
| Midvik Engineering AS | Professional & scientific | 2011 |
| Miggi Invest AS | | 2020 |
| Migliori Invest AS | Real estate | 2011 |
| Mijis Fotklinikk AS | Health & social care | 2024 |
| Mikado AS | Hospitality | 2018 |
| Mikado Holding AS | Real estate | 2016 |
| Mikado Litoral AS | Hospitality | 2016 |
| Mikrokraft AS | Wholesale & retail | 1995 |
| Milas Ventures AS | | 2026 |
| Milestone Zero AS | Professional & scientific | 2023 |
| Milje Holding AS | | 2025 |
| Miljeteig Holding AS | | 2020 |
| Miljetelli AS | | 2022 |
| Miljø Rent AS | Administrative & support | 2017 |
| Miljø Taxi Norge AS | Transport & logistics | 2025 |
| Miljøpreservering AS | Manufacturing | 2023 |
| Miljøservice Eiendom AS | Administrative & support | 2015 |
| Mille E Una Notte AS | Real estate | 2009 |
| Milo Invest AS | Professional & scientific | 2011 |
| Mimer Services AS | Professional & scientific | 2019 |
| Min Produksjon AS | Administrative & support | 2018 |
| Mina P. Enger AS | Financial services | 2010 |