| Kongsberg Safety Systems AS | Professional & scientific | 2005 |
| Konow Holding AS | Wholesale & retail | 2021 |
| Kos Investeringer AS | Other services | 2018 |
| Kreativ Teknikk AS | Administrative & support | 2015 |
| Kristiansen Logistikk AS | Transport & logistics | 2011 |
| Kristron Invest AS | Real estate | 2016 |
| Kriweb AS | Education | 2021 |
| Kulde Og Ventilasjon AS | Construction | 2011 |
| Kvernflaten Holding AS | Professional & scientific | 2019 |
| Kvistad Invest AS | Real estate | 2006 |
| L&M Ellipse AS | Construction | 2022 |
| L.T.P. Norberg AS | Professional & scientific | 2014 |
| La Le Holding AS | | 2025 |
| Laboremus Invest AS | Real estate | 2005 |
| Laleks AS | Construction | 2016 |
| Lambrechts Holding AS | | 2022 |
| Laser & Dental AS | Health & social care | 2022 |
| Lauritsen AS | Construction | 2015 |
| Lauritsen Invest AS | | 2022 |
| Lauritsen VVS AS | Construction | 2018 |
| Lemaitre Music AS | Arts & recreation | 2022 |
| Lene Hauge AS | Hospitality | 2022 |
| Lesten AS | Professional & scientific | 1997 |
| Lestin Holding AS | Professional & scientific | 2020 |
| Levada Holding AS | | 2022 |
| Levisol & T M Selvær AS | Real estate | 2026 |
| Limoe Invest AS | Financial services | 2016 |
| LJL AS | | 2020 |
| LNR Commerce AS | Wholesale & retail | 2026 |
| Luis AS | Professional & scientific | 1998 |
| M&I Invest AS | Professional & scientific | 2023 |
| M.E. Consult AS | Professional & scientific | 2024 |
| M.E. Holding AS | | 2017 |
| Mace Capital AS | | 2020 |
| Maces Invest AS | | 2024 |
| Mahal Investment L.L.C Shahida Tanveer AS | Real estate | 2023 |
| Mainspring AS | Financial services | 2016 |
| Make Music AS | Arts & recreation | 1996 |
| Make Music Publishing AS | Information & communication | 2010 |
| Malika Invest AS | Financial services | 2018 |
| Malthe Winje AS | Real estate | 1922 |
| Malthe Winje Automasjon AS | Information & communication | 1994 |
| Malthe Winje Energiteknikk AS | Energy | 2013 |
| Malthe Winje Infrapower AS | Professional & scientific | 2001 |
| Marbesa Properties AS | Real estate | 2016 |
| Maribes AS | Professional & scientific | 2024 |
| Markveien 50A AS | Real estate | 2007 |
| Martine Elise Berg Invest AS | Financial services | 2018 |
| MASSIV3 AS | Construction | 2022 |
| Mathias Mikkelsen AS | Information & communication | 2012 |
| Mentonor AS | Professional & scientific | 1992 |
| Meskel AS | Real estate | 2007 |
| Mi Lundberg AS | Wholesale & retail | 2019 |
| Mii Rakel AS | Professional & scientific | 2018 |
| Mijo Consulting AS | Information & communication | 2008 |
| MIKEMEDIA1 AS | Information & communication | 2020 |
| Mikida AS | Financial services | 2015 |
| Mikro Invest & Holding AS | Financial services | 2017 |
| Miller Service AS | Other services | 2023 |
| Miraculix AS | | 2026 |
| Mitcon AS | Information & communication | 2001 |
| Mitcon X AS | | 2025 |
| Modal Aktiva AS | | 2018 |
| Moga Invest AS | | 2026 |
| Mokollen S4 AS | Real estate | 2017 |
| Moondeko AS | Professional & scientific | 2016 |
| Morlyn AS | | 2020 |
| Morten Malmo Invest AS | Financial services | 2018 |
| Moss Barber Shop AS | Other services | 2022 |
| Motivae AS | Education | 2026 |
| Move Invest AS | Real estate | 2019 |
| Mshs Holding AS | | 2024 |
| MUL10 AS | Construction | 2024 |
| Muribø AS | Construction | 2020 |
| Muribø Eiendom AS | Real estate | 1997 |
| Muribø Holding AS | Construction | 2020 |
| Myrvoll Dagligvare AS | Wholesale & retail | 2025 |
| Na Invest Eiendom AS | Real estate | 2022 |
| Nanettes Holding AS | | 2025 |
| Naturebeings AS | Education | 2020 |
| Navilab AS | Manufacturing | 2018 |
| Nawab Ecom AS | Wholesale & retail | 2023 |
| Nero Cavetto AS | Wholesale & retail | 2025 |
| Neteholm AS | Professional & scientific | 2023 |
| Ngabbo AS | | 2020 |
| Nge Eiendom AS | Real estate | 2016 |
| Nian Holding AS | | 2017 |
| Nilam Capital AS | Financial services | 2011 |
| No Respite AS | Information & communication | 2025 |
| Nocloud AS | Wholesale & retail | 2020 |
| Nor Gastro AS | Wholesale & retail | 2025 |
| Norberg Eiendom AS | Real estate | 2024 |
| Nord Eiendomsmegling AS | Real estate | 2022 |
| Norderhaug Holding AS | Real estate | 2018 |
| Nordic Agents Da | Wholesale & retail | 2007 |
| Nordic Apartrent AS | Real estate | 2020 |
| Nordic Environmental Solutions Nuf | Wholesale & retail | 2010 |
| Nordic Living AI AS | | 2026 |
| Nordic Port and Pit Solutions AS | Professional & scientific | 2026 |
| Nordisk Eiendomsutvikling AS | Real estate | 2005 |