| Lenngren Invest AS | Manufacturing | 2005 |
| Lifha Holding AS | | 2020 |
| Lilleakerveien 47 AS | Real estate | 2017 |
| Linde Eiendom AS | Real estate | 2005 |
| Linke Invest & Management AS | Professional & scientific | 2014 |
| Linntech AS | | 2023 |
| Lmiv AS | Real estate | 2012 |
| Lofoten Bygg AS | Real estate | 2026 |
| Lofoten Opera AS | Real estate | 2011 |
| Lomtjønn I AS | Real estate | 2008 |
| Lorentzen & Co AS | Transport & logistics | 2023 |
| Los Invest AS | Financial services | 2006 |
| Lotta Invest AS | | 2022 |
| Lujeka AS | | 2023 |
| Luksepp AS | | 2025 |
| Lunco AS | Professional & scientific | 2024 |
| M U Consulting AS | Professional & scientific | 1988 |
| M&A Invest AS | Wholesale & retail | 2022 |
| M2 Taksering AS | Real estate | 2013 |
| Maakaar AS | Financial services | 2011 |
| Mach Invest AS | | 2018 |
| Madra Invest AS | Real estate | 2004 |
| Mafeli AS | Wholesale & retail | 2016 |
| Magne AS | | 2021 |
| Magnus Holst Holding AS | | 2021 |
| Magnus Lund AS | Real estate | 2011 |
| Malexos AS | | 2025 |
| Mamath AS | Real estate | 2009 |
| Management & Finance AS | Professional & scientific | 2005 |
| Mango Holding AS | Financial services | 2005 |
| Marbu AS | Real estate | 2016 |
| Margrethe AS | | 1996 |
| Marhajo Invest AS | Professional & scientific | 2005 |
| Martin Bentzen Invest AS | Professional & scientific | 2022 |
| Martin Schiander Holding AS | Financial services | 2017 |
| Marwi AS | Arts & recreation | 2020 |
| Maso Holding AS | | 1994 |
| Matama AS | | 2020 |
| Matboden Eiendomsinvest AS | Real estate | 2017 |
| Matboden Holding AS | Real estate | 1993 |
| Matrik AS | | 2026 |
| Mban Invest AS | | 2023 |
| MCT AS | | 2018 |
| Mebust Activo AS | Information & communication | 2006 |
| Medilaserhud Og Spesialistklinikk Oslo AS | Health & social care | 2014 |
| Memorycloud AS | | 2017 |
| Mercer Invest AS | Real estate | 2006 |
| Mesel Eiendom AS | Real estate | 1995 |
| Mesteren Eiendom AS | Real estate | 2016 |
| Mi Casa Su Casa AS | Wholesale & retail | 2006 |
| Mi Consulting AS | Professional & scientific | 2017 |
| Midvintr AS | Wholesale & retail | 2020 |
| Mikas AS | Financial services | 1987 |
| Mirainvest AS | Real estate | 2005 |
| Mjåvann Eiendomsinvest AS | Real estate | 2011 |
| Mjåvann Kombibygg AS | Real estate | 2021 |
| Mobiltannlegen AS | Health & social care | 2021 |
| Mojo Capital AS | | 2000 |
| Mons Holding AS | Real estate | 2005 |
| Moorea Nordic AS | Professional & scientific | 2010 |
| Mountain Music AS | Information & communication | 2000 |
| Mukti Tribe AS | Manufacturing | 2026 |
| Multirør AS | Construction | 2015 |
| Musicbox AS | Information & communication | 2016 |
| MVC Invest AS | | 2024 |
| Mørland Invest AS | | 2020 |
| Naab Invest AS | | 2023 |
| Nannik AS | Real estate | 2009 |
| Nanok Eiendom AS | Real estate | 2000 |
| Nansen Cafe AS | Hospitality | 2025 |
| Napa Agencies AS | Wholesale & retail | 2015 |
| Narheim Holding AS | | 2017 |
| Naus AS | Financial services | 2005 |
| Navigani AS | Professional & scientific | 2012 |
| Nela Invest AS | Real estate | 2018 |
| Netrom Oslo AS | Real estate | 2009 |
| Networking AS | Real estate | 1988 |
| Neve AS | | 2020 |
| Newtrims Holding AS | Professional & scientific | 2013 |
| NF Invest AS | Real estate | 2005 |
| Nialcri Da | Real estate | 1994 |
| Nicolai Samuelsen AS | Wholesale & retail | 1998 |
| Nilssons AS | Information & communication | 2014 |
| Niste AS | Financial services | 2005 |
| Noer Consult AS | Information & communication | 2007 |
| Nordic Precious Metals AS | Professional & scientific | 2003 |
| Nordic Sailing AS | Education | 2026 |
| Nordre Kolstad Gård Da | Agriculture & fishing | 2025 |
| Norship Finance AS | Real estate | 1986 |
| Norsk Rype- Og Tytinglag AS | Agriculture & fishing | 1997 |
| Norsk Silent Disco AS | Arts & recreation | 2023 |
| North Estates AS | Hospitality | 2025 |
| North South International AS | Professional & scientific | 2001 |
| Northern Cabins AS | Hospitality | 2024 |
| Northern Marine Advisors AS | Transport & logistics | 2000 |
| Noxa AS | Professional & scientific | 2017 |
| Np-Complete AS | | 2020 |
| Numaquest AS | Wholesale & retail | 2007 |
| Nye GKB Invest AS | | 2018 |
| Nyodden Utvikling AS | Real estate | 2022 |