| Kjmm Invest AS | | 2025 |
| Klarkbygg-Pawel AS | Construction | 2025 |
| Klimaplan AS | Professional & scientific | 2003 |
| Klimaspillet AS | Education | 2015 |
| Knakelibrak Invest AS | | 2022 |
| KNK Tour AS | Administrative & support | 2017 |
| Kongsten AS | Transport & logistics | 2016 |
| Kristoffer Fiane Holding AS | Financial services | 2014 |
| Kroopas Holding AS | Wholesale & retail | 2005 |
| Kruuse Norge AS | Wholesale & retail | 1999 |
| Kvadrat Bad Og Støp AS | Construction | 2018 |
| Kvestad Massemottak AS | Mining & quarrying | 2020 |
| Kvåle AS | Professional & scientific | 2016 |
| La Jenvon Da | Wholesale & retail | 2025 |
| Laachesæter AS | Real estate | 2019 |
| Landfald Reistad Holding AS | | 2026 |
| Langbakken 12 AS | Real estate | 2015 |
| Lars Løvstad AS | Education | 2023 |
| Lefo AS | Professional & scientific | 2020 |
| Lensa Invest AS | | 2010 |
| Li Industritech AS | Manufacturing | 2024 |
| Lieblein Holding AS | | 2024 |
| Lifeinscience Corporation AS | Professional & scientific | 2021 |
| Liftpartner Maskin & Liftutleie AS | Administrative & support | 2005 |
| Line Og Mathilde Da | Education | 2022 |
| Lokaj Renhold Og Maling AS | Administrative & support | 2005 |
| Luhg Invest AS | Real estate | 2026 |
| Lyngskogen Garasjer SA | Real estate | 1969 |
| M Consulting AS | Education | 2015 |
| M&T Consulting Group AS | Professional & scientific | 2023 |
| M.Løken AS | Construction | 2012 |
| Madeinoslo Da | Education | 2006 |
| Maem Invest AS | | 2020 |
| Majeve AS | | 2017 |
| Mancave Holding AS | Wholesale & retail | 2019 |
| Margolei AS | Real estate | 2006 |
| Mari Smith Holding AS | | 2023 |
| Marianne`S Hår, Fot Og Beauty Senter AS | Other services | 2026 |
| Marketflow AS | Information & communication | 2025 |
| Materialforvalterne AS | | 2023 |
| Matforsk Eiendom AS | Real estate | 2007 |
| MDR Salg Og Eiendom AS | Real estate | 2002 |
| Media Logistics AS | Administrative & support | 2004 |
| Medmeet AS | Education | 2023 |
| Megacandy AS | Wholesale & retail | 2016 |
| Mestergull AS | Wholesale & retail | 2000 |
| Mestergull Invest AS | Wholesale & retail | 1998 |
| Mestergull Web Shop AS | Wholesale & retail | 2011 |
| Mgoh Holding AS | | 2026 |
| Mikleo AS | | 2021 |
| Mila Holding AS | | 2021 |
| Milan Transport AS | Transport & logistics | 2021 |
| Miljøcert AS | Information & communication | 2025 |
| Miljølogistikk AS | Transport & logistics | 2019 |
| Mimiro AS | Information & communication | 2018 |
| Mimiro Holding AS | Information & communication | 2018 |
| Mjelde Momentum AS | | 2018 |
| Moer Gård AS | Real estate | 2016 |
| Moerveien 6 AS | Real estate | 2015 |
| Moerveien Legesenter Da | Health & social care | 2003 |
| Mohn Holding AS | | 2024 |
| Momentant AS | Information & communication | 2017 |
| Morten Gultvedt Entreprenør AS | Construction | 1993 |
| Mosaikk Utvikling AS | Health & social care | 2025 |
| Mpluss IT AS | Information & communication | 2013 |
| MR. T Consult & Invest AS | Information & communication | 2017 |
| Multi Supply Norway Nuf | Wholesale & retail | 2008 |
| My-Co AS | Professional & scientific | 2010 |
| Myfit AS | Information & communication | 2022 |
| Myrehogget AS | | 2022 |
| Myrveien 16 AS | Real estate | 2007 |
| Myrveien 8 AS | Real estate | 2026 |
| Myrveien 8 AS | Real estate | 2011 |
| Myrveien 8 Midlertidig AS | | 2026 |
| Myrvn. 4 AS | Real estate | 2014 |
| MZ Holding AS | Real estate | 2020 |
| Mæhlum Invest AS | Real estate | 2022 |
| N2 Agri AS | Professional & scientific | 2016 |
| Nabas AS | Professional & scientific | 1996 |
| Naboens Bakte Poteter Da | Wholesale & retail | 1994 |
| Nasjonalt Senter for Vanninfrastruktur AS | Professional & scientific | 2019 |
| Ncopa Consulting AS | Information & communication | 2015 |
| Nerius Bygg AS | Construction | 2013 |
| Nettforum AS | Information & communication | 1999 |
| Next Consulting AS | Professional & scientific | 2026 |
| Nexus Auto AS | Wholesale & retail | 2009 |
| Nico International AS | Real estate | 1992 |
| NLR Regnskap AS | Professional & scientific | 2024 |
| Nomadeocean Da | Wholesale & retail | 2001 |
| Nordic Sensor Solutions AS | Professional & scientific | 2024 |
| Nordiskt Genresurscenter | Agriculture & fishing | 2008 |
| Nordlys Farger AS | Construction | 2024 |
| Nordstjerna Dyrlegetjenester AS | Professional & scientific | 2026 |
| Nordstrand Plantesenter AS | Wholesale & retail | 2003 |
| Norgesdrift AS | Real estate | 2026 |
| Norsk Byggekontroll AS | Professional & scientific | 2019 |
| Norsk Kontrollsystem AS | Professional & scientific | 2019 |
| Norsk Landbruksrådgiving SA | Agriculture & fishing | 2023 |
| Nunatak Sport Da | Arts & recreation | 2006 |
| Nutrimed AS | Wholesale & retail | 2019 |