| Les Arcis Invest AS | | 2024 |
| Lester Hill AS | Financial services | 2005 |
| Levator Safety AS | Administrative & support | 1995 |
| Levelupkid AS | Professional & scientific | 2017 |
| Lge Invest AS | | 2016 |
| Lier Group AS | | 2026 |
| Liertoppen Sushi & Wok AS | Hospitality | 2025 |
| Life Agency AS | Professional & scientific | 2019 |
| Lift AS | | 2018 |
| Lignum Sol AS | Construction | 2021 |
| Lindeq Holding AS | Professional & scientific | 2010 |
| Lindmark Invest AS | | 2019 |
| Line Hoven AS | | 2022 |
| Linelia Invest AS | Professional & scientific | 2023 |
| Lito AS | Financial services | 2005 |
| Lium Industrier AS | | 2020 |
| Liv Investment AS | | 2020 |
| LK Technology AS | Information & communication | 2023 |
| LKR41 AS | Financial services | 2007 |
| LNJ Invest AS | Real estate | 2000 |
| Lofoten Cruise Line AS | Transport & logistics | 2018 |
| Lorentzen Invest AS | | 2020 |
| Louise Rostad AS | Real estate | 2019 |
| Lucky Holding AS | Wholesale & retail | 2006 |
| Lukis Bygg AS | Construction | 2023 |
| Lundes Revisjon Og Regnskap AS | Professional & scientific | 2013 |
| Luprano Nuf | Information & communication | 2008 |
| Lush Frisør AS | Other services | 2014 |
| Luvion Barber Shop AS | Other services | 2023 |
| Ly Eiendom AS | Real estate | 2012 |
| Ly Eiendom Bergensgata 9 AS | Real estate | 2012 |
| Ly Eiendom Utvikling AS | Real estate | 2017 |
| Lys I Mørchet AS | | 2020 |
| Lytomt Revisjon AS | Professional & scientific | 2007 |
| Løkkeåsveien 3A&B AS | Real estate | 2015 |
| Lønnshuset AS | Education | 2023 |
| Løvdahl Holding AS | | 2019 |
| M Kiligitto AS | | 2022 |
| M. J. Lode AS | Information & communication | 2011 |
| MA4E AS | | 2020 |
| Mab Consulting AS | | 2021 |
| Machaon AS | | 2026 |
| Macleod Eiendom AS | Real estate | 2020 |
| Madalex Invest AS | Real estate | 2006 |
| Maddix AS | Other services | 2025 |
| Mafaa Invest AS | | 2023 |
| Magenta Yoga AS | Wholesale & retail | 2021 |
| Mail Invest AS | | 2018 |
| Maisen AS | | 2022 |
| Maisen Invest AS | | 2023 |
| Maki Sushi AS | Hospitality | 2014 |
| Malamo Invest AS | | 2022 |
| Malerfirmaet Jonas Olsson AS | Construction | 2020 |
| Malgorzata Ciach AS | Wholesale & retail | 2014 |
| Malibu Invest AS | | 2024 |
| Mandelmassenasse Invest AS | Real estate | 2018 |
| Maniitok AS | Wholesale & retail | 2016 |
| Mantella Eiendom AS | Real estate | 2014 |
| Marbel Invest AS | Financial services | 2005 |
| Mardy AS | | 2022 |
| Mari G. Holding AS | Real estate | 2016 |
| Mario Invest AS | Real estate | 2017 |
| Marit Gaare Laache AS | Education | 2024 |
| Markko AS | | 2005 |
| Markup AS | Financial services | 2016 |
| Marlow Arkitekter AS | Professional & scientific | 2008 |
| Marlow Invest AS | Professional & scientific | 1995 |
| Martihel AS | | 2025 |
| Martin Jonassen AS | Information & communication | 2011 |
| Matheson Holding AS | | 2021 |
| Mattis Mat AS | Hospitality | 2013 |
| MB Exhibit AS | Administrative & support | 2015 |
| MB Work System Marcin Baranski | Administrative & support | 2009 |
| MBS Consult AS | Professional & scientific | 2009 |
| Mcmahon and Tate AS | | 2020 |
| MD Interiørprosjekt AS | Professional & scientific | 2007 |
| Meadow Hagedesign AS | Administrative & support | 2025 |
| Meavia Holding AS | Health & social care | 2022 |
| Meba Holding AS | | 2019 |
| Mebo Invest AS | Professional & scientific | 2014 |
| Medlaw AS | Professional & scientific | 2020 |
| Mejlænder-Larsen AS | Professional & scientific | 2020 |
| Melsom & Napier Ans | Professional & scientific | 2010 |
| Memo Forlag AS | Information & communication | 2015 |
| Mental Flyt AS | Education | 2025 |
| Mentorio AS | Information & communication | 2025 |
| Meraki Marketing AS | Professional & scientific | 2018 |
| Messel Group AS | | 2025 |
| Messel Invest AS | Professional & scientific | 2014 |
| MF Investment Holding AS | | 2021 |
| Mfjeldstad Invest AS | | 2023 |
| MFS Holding AS | Real estate | 2015 |
| Miami Buss AS | Transport & logistics | 2022 |
| Micronation AS | Arts & recreation | 2020 |
| Milestone Holding AS | Professional & scientific | 2017 |
| Milnik Invest AS | Wholesale & retail | 2016 |
| Mimiris AS | Professional & scientific | 2026 |
| Mindboost AS | Professional & scientific | 2018 |
| MJH Holding AS | | 2020 |
| MK Konsulenttjenester AS | Professional & scientific | 2013 |