| Lineage Norway Holdings 3 AS | Real estate | 2020 |
| Lineage Norway Holdings I AS | Real estate | 2020 |
| Liro Holding AS | Construction | 2005 |
| Liskri AS | Real estate | 2011 |
| Lisleby Auto AS | Wholesale & retail | 2026 |
| Livento Da | Wholesale & retail | 2002 |
| LKL Holding AS | Financial services | 2013 |
| LR Arnesen Consulting AS | Administrative & support | 2022 |
| LS Music AS | Information & communication | 2024 |
| Lunde Barnehage Ans | Education | 2005 |
| Lunde Barnehage AS | Education | 2006 |
| LVD AS | Arts & recreation | 2001 |
| M-M Holding AS | | 2023 |
| M. Peter Invest AS | | 2023 |
| M.A. Productions AS | Arts & recreation | 2020 |
| M.Kirkeng AS | Agriculture & fishing | 2018 |
| M20 Handler AS | | 2026 |
| Ma Wear AS | Wholesale & retail | 2019 |
| Madel Products AS | Professional & scientific | 2015 |
| Magnifizent Inveztments AS | | 2018 |
| Maisol AS | Financial services | 2013 |
| Majorvegen Nannestad AS | Real estate | 2024 |
| Make H AS | Real estate | 2020 |
| Makrotech AS | Other services | 2020 |
| Manoa AS | | 2018 |
| Martinsen Værsågod AS | | 2025 |
| Marvin AS | | 2020 |
| Maskinhuset AS | Administrative & support | 1979 |
| Mathiesen Kranservice AS | Professional & scientific | 2005 |
| Matværste AS | Hospitality | 2024 |
| MD Sikkerhet AS | Wholesale & retail | 2021 |
| Mediteknikk AS | Professional & scientific | 2003 |
| Mema Invest AS | | 2015 |
| Meraki Matværste AS | Hospitality | 2021 |
| Metacon Holding AS | Professional & scientific | 2009 |
| Metacon Investment AS | Real estate | 2004 |
| Meum Holding AS | Real estate | 2005 |
| Meyeng AS | Transport & logistics | 2023 |
| Micro-Ide AS | Information & communication | 2013 |
| Midgar Flyfish AS | Education | 2019 |
| Mile-In AS | | 2017 |
| Mimik AS | Health & social care | 2025 |
| Minemagasinet AS | Hospitality | 2017 |
| Minigartneren AS | Administrative & support | 2022 |
| Minutten AS | Hospitality | 1992 |
| Mixmaster AS | Real estate | 2016 |
| MJH Invest AS | | 2026 |
| MLF Holding AS | Real estate | 2018 |
| Moby AS | Administrative & support | 2012 |
| Moe Ventilasjon AS | Construction | 2013 |
| Mojord Holding AS | Real estate | 2014 |
| Momentum Drøbak AS | Hospitality | 2001 |
| Monefeldt Holding AS | Financial services | 2005 |
| Morell Eiendom Nuf | Real estate | 2010 |
| Morogdatter Bunadstjenester Da | Wholesale & retail | 2020 |
| Mosseveien 43 AS | Real estate | 2026 |
| Motio Helse AS | Health & social care | 2021 |
| MRS Invest AS | | 2018 |
| Murerfirma Roar Kristoffersen AS | Construction | 2002 |
| Murmester Mykland AS | Construction | 2017 |
| Myob AS | Professional & scientific | 2021 |
| Myrvold Capital AS | | 2025 |
| Myrvold Invest AS | Professional & scientific | 2020 |
| Måkekollen Holding AS | Real estate | 2020 |
| Mølleveien 5 AS | Real estate | 2022 |
| Nadaya AS | Health & social care | 2025 |
| Nalycan AS | Information & communication | 2015 |
| Nappetassen Invest AS | | 2025 |
| Nigrav Holding AS | Real estate | 2007 |
| Nigrav Verktøy AS | Manufacturing | 1996 |
| NILS7 AS | Professional & scientific | 2018 |
| Nordbergveien AS | Real estate | 2025 |
| Nordic Photo Lens | Wholesale & retail | 2025 |
| Nordic Traveltech Lab AS | Information & communication | 2020 |
| Nordisk Vakuumteknikk AS | Administrative & support | 2015 |
| Nordre Rekvin 2 AS | Real estate | 1997 |
| Norencert 1 AS | Professional & scientific | 2026 |
| Norencert Da | Professional & scientific | 2019 |
| Norencert Holding AS | | 2026 |
| Norges Lager AS | Real estate | 2022 |
| Norli Holding AS | | 2022 |
| Normaster AS | Real estate | 1997 |
| Normaster Eiendom AS | Real estate | 2020 |
| Noro Norge AS | Wholesale & retail | 2002 |
| Norsk Totaleiendom AS | Real estate | 1991 |
| Norsus Norsk Institutt for Bærekraftsforskning AS | Professional & scientific | 2006 |
| Norxe AS | Manufacturing | 2015 |
| Not Yet AS | Professional & scientific | 2017 |
| Novelaklinikken Fredrikstad AS | Health & social care | 2006 |
| NP Innovation Norway AS | Professional & scientific | 2018 |
| Nullfritid AS | Construction | 2023 |
| Nuros Invest AS | Information & communication | 2018 |
| Nxtech AS | Professional & scientific | 2005 |
| Nxtenergy AS | Manufacturing | 2019 |
| Nxtventure AS | Manufacturing | 2022 |
| Ny Taktikk AS | Real estate | 2006 |
| Nye Firemannsvilla AS | Real estate | 2026 |
| Nygaardsgata 55 AS | Real estate | 2006 |
| Næss Since 1955 Værstetorvet AS | Wholesale & retail | 2006 |
| Nøkkheim AS | Professional & scientific | 2000 |