| Linhøi Entreprenør AS | Professional & scientific | 2021 |
| Linhøi Invest AS | Professional & scientific | 2021 |
| Lipe Holding AS | Real estate | 2015 |
| Livi Invest AS | Financial services | 2016 |
| Livv AS | Wholesale & retail | 2016 |
| LLL Holding AS | Real estate | 2005 |
| Lm&C AS | Professional & scientific | 2007 |
| Lofotsolen Eiendom AS | Real estate | 2021 |
| Lofotsolen Rorbuer AS | Hospitality | 2022 |
| Loftet Interiør & Møbler AS | Wholesale & retail | 1998 |
| LRL Invest AS | Real estate | 2021 |
| Lucy Holding AS | Wholesale & retail | 2018 |
| Lumector AS | Professional & scientific | 2026 |
| Lumibird Medical Nordics AS | Wholesale & retail | 1997 |
| Lumiero AS | Information & communication | 2014 |
| Lundekroken 424 AS | Real estate | 2021 |
| Lundekroken AS | Real estate | 2021 |
| Lunga Holding AS | | 2023 |
| Luster Holding AS | | 2025 |
| Løvseth Holding AS | Hospitality | 2007 |
| M Bjørge AS | | 2025 |
| M Sørensen AS | Wholesale & retail | 1905 |
| Madmad Finans AS | | 2025 |
| Mait Norway AS | Information & communication | 2015 |
| Majore Invest AS | | 2021 |
| Maka Invest AS | | 2006 |
| Mana Life AS | Wholesale & retail | 2013 |
| Manaco AS | Arts & recreation | 2022 |
| Marcus Aarvik Holding AS | | 2026 |
| Marex Management AS | Real estate | 2011 |
| Maridalsveien 266 AS | Real estate | 2003 |
| Marine Power International Ltd Nuf | Wholesale & retail | 1995 |
| Maritim Elektronikk Asker & Bærum AS | Construction | 2022 |
| Martin Andersen Holding AS | Wholesale & retail | 2015 |
| Marvar Holding AS | Real estate | 2013 |
| Masomo AS | Professional & scientific | 2016 |
| Matvar Invest AS | Real estate | 2015 |
| Max Dig AS | Information & communication | 2025 |
| Maxwell Consulting Norway AS | Professional & scientific | 2024 |
| Medvita AI AS | Information & communication | 2025 |
| Megaflis AS | Wholesale & retail | 2004 |
| Megaflis Holding AS | Wholesale & retail | 2020 |
| Meglerbooking AS | Information & communication | 2026 |
| Meieribyrået AS | Wholesale & retail | 1914 |
| Melhoos AS | | 2025 |
| Menohacker AS | Wholesale & retail | 2026 |
| Mentoro AS | Health & social care | 2025 |
| Metor Industrial Solutions AG Nuf | Professional & scientific | 2009 |
| Meubles Ikea France | Wholesale & retail | 2004 |
| MHH Invest AS | Real estate | 2018 |
| Mijas Garden AS | Real estate | 2016 |
| Miljøbag Norge AS | Water & waste | 2025 |
| Minikiosken AS | Wholesale & retail | 2023 |
| Mirjan Holding AS | | 2025 |
| Mitranord AS | Information & communication | 2026 |
| Mkadent AS | Health & social care | 2021 |
| ML Prosjekt AS | Professional & scientific | 2020 |
| MM Consult AS | Real estate | 2005 |
| Mobile AS | Wholesale & retail | 1987 |
| Mobile Asker AS | Other services | 1989 |
| Mobile Bilutleie AS | Administrative & support | 1987 |
| Mobile Real AS | Real estate | 2026 |
| Mobile Real II AS | Real estate | 2026 |
| Momyr Holding AS | Wholesale & retail | 2013 |
| Morgedalshytta AS | Construction | 2017 |
| Morgendagens Trafikkskole AS | Education | 2018 |
| Mosikos Invest AS | | 2024 |
| Motor Forum AS | Other services | 2002 |
| Motorpool Finans AS | Wholesale & retail | 2012 |
| Motorpool Handel AS | Wholesale & retail | 1988 |
| MS Montering AS | Construction | 2017 |
| Msa Holding AS | Real estate | 2018 |
| Mskogstad AS | | 2025 |
| Mso Studio AS | Wholesale & retail | 2015 |
| Multicity Eiendom AS | Real estate | 2021 |
| Museion AS | | 2022 |
| My-Home AS | Wholesale & retail | 2018 |
| Mycar Fleet AS | Information & communication | 2021 |
| Myråsdalen 10 AS | Real estate | 2011 |
| Mågerø AS | Real estate | 2021 |
| Møbelringen Grini AS | Wholesale & retail | 2011 |
| Møbelringen Slependen AS | Wholesale & retail | 2014 |
| Møller Bil Vest AS | Other services | 1971 |
| Møller Sportsbiler Asker & Bærum AS | Wholesale & retail | 2017 |
| N2C Norge AS | Wholesale & retail | 2021 |
| N301 Consulting AS | Professional & scientific | 2025 |
| Nanna AS | Real estate | 1968 |
| Nansen Invest AS | | 2025 |
| Navico Group AS | Wholesale & retail | 2016 |
| Navico Holding AS | Professional & scientific | 2016 |
| Navico Norway AS | Wholesale & retail | 1993 |
| Nbvi AS | Wholesale & retail | 2012 |
| Ncod AS | | 2019 |
| Neospinn AS | Information & communication | 2014 |
| Nesbruveien 33 AS | Real estate | 1982 |
| Nesbruveien 40 AS | Wholesale & retail | 2006 |
| Nesøyveien 4 AS | Real estate | 2017 |
| Netrocon AS | Professional & scientific | 2019 |
| Nevyn Holding AS | Professional & scientific | 2018 |
| Nissen-Lie Holding AS | Information & communication | 1984 |