| Lime Holdings AS | Wholesale & retail | 2022 |
| Lindahls Handels Hus AS | Wholesale & retail | 2014 |
| Lindam Invest AS | Real estate | 1990 |
| Lindeflaten Holding AS | | 2020 |
| Lindegaard Holding AS | Financial services | 2017 |
| Lindflora Norge AS | Wholesale & retail | 2015 |
| Lindgren Invest AS | | 2023 |
| Lindman Eiendom AS | Real estate | 1996 |
| Linkline AS | Construction | 2022 |
| Liselotte Lefdals Rideskole AS | Education | 2019 |
| Lisenskontoret.No AS | Wholesale & retail | 2013 |
| Listn AS | Information & communication | 2026 |
| Live Event Partner AS | Arts & recreation | 2024 |
| LK Bolig AS | Real estate | 2025 |
| LK Optimum AS | | 2017 |
| LKH Invest AS | | 2026 |
| Lm-Artist AS | Arts & recreation | 2015 |
| Local Food AS | Information & communication | 2014 |
| Loni Studio AS | Information & communication | 2026 |
| Loops Learning AS | Information & communication | 2023 |
| Lorange Hospitality AS | Hospitality | 2010 |
| Lorelay Sanchez Øyelege AS | Health & social care | 2018 |
| Lorentzen & Lund AS | | 2026 |
| Lost Gallery AS | Information & communication | 2024 |
| Love Your Nails AS | Other services | 2019 |
| LPJ Holding AS | | 2021 |
| LST Bolig AS | Real estate | 2023 |
| Lu-Tek AS | Manufacturing | 2024 |
| Ludem Holding AS | | 2020 |
| Luk Holding AS | Construction | 2017 |
| Luma AS | Real estate | 1967 |
| Lumina Invest AS | Professional & scientific | 2026 |
| Lunde Holding AS | Administrative & support | 2014 |
| Lundeby Holding AS | | 2008 |
| Lunderbye Consulting AS | Real estate | 1991 |
| Lundes Holding AS | | 2023 |
| Lunes Eiendom AS | Real estate | 2020 |
| Lunes Holding AS | | 2020 |
| Lungelege Morten Tangen AS | Health & social care | 2025 |
| Lusy AS | Hospitality | 2023 |
| Lykke Trier AS | Information & communication | 2018 |
| Lysbølge AS | | 2020 |
| Lyse Netter Moss AS | Arts & recreation | 2024 |
| Lystlunden AS | Real estate | 2010 |
| Lærke Moss AS | Wholesale & retail | 2025 |
| Lépah Wear AS | Wholesale & retail | 2026 |
| Løen Torg AS | Real estate | 1992 |
| Løes Eiendommer AS | Wholesale & retail | 1976 |
| Løes Holding AS | Wholesale & retail | 1991 |
| Løkke Atferdsløsninger Ans | Education | 2008 |
| Løkkegata Eiendom AS | Real estate | 2013 |
| Løpeskjørt AS | Wholesale & retail | 2024 |
| Løyper AS | Information & communication | 2022 |
| M Angell Holding AS | Health & social care | 2020 |
| M&T Eiendom AS | Real estate | 2019 |
| M-A Invest AS | | 2022 |
| M-Travel AS | Administrative & support | 2013 |
| M.I.E Holding AS | Real estate | 2022 |
| M8 Eiendom AS | Real estate | 2014 |
| Maak Holding AS | Real estate | 2024 |
| Maan Fashion AS | Wholesale & retail | 2025 |
| Maax Holding AS | | 2021 |
| Mac & Bob Investments AS | Administrative & support | 2006 |
| Macro Logic AS | Wholesale & retail | 1995 |
| Madam Carl AS | Hospitality | 2026 |
| Made by Hvesser AS | Professional & scientific | 2025 |
| Madeleine KDS AS | Other services | 2026 |
| Madimo Invest AS | Health & social care | 2012 |
| Madison Consulting AS | Professional & scientific | 2022 |
| Madsen Dagligvare AS | Wholesale & retail | 2020 |
| Mady Eiendom AS | Real estate | 2022 |
| Magda Invest AS | | 2025 |
| Magic Pie SA | Arts & recreation | 2015 |
| Magnar Nilsen Consulting AS | Professional & scientific | 1984 |
| Maholt Holding AS | | 2026 |
| Mai Tran Holding AS | | 2025 |
| Majero AS | Real estate | 2021 |
| Makkonen Auto AS | Wholesale & retail | 2024 |
| Makt Holding AS | | 2024 |
| Malermester Leif Lorentzen AS | Construction | 2019 |
| Malermester Tom Lillevik AS | Construction | 2023 |
| Malermesteren Johansen AS | Construction | 2019 |
| Maling & Boligstyling AS | Construction | 2014 |
| Malm Ltd Nuf | Other services | 2006 |
| Malmberg Borrning AB | Mining & quarrying | 2013 |
| Mama Purity AS | Education | 2020 |
| Mans Holdings AS | Health & social care | 2021 |
| Mar-Sec AS | Administrative & support | 2017 |
| Marcus Gustavsson Invest AS | Real estate | 2006 |
| Mariwan Invest AS | Other services | 2011 |
| Markedsmateriell Gruppen AS | Professional & scientific | 2021 |
| Markedsmateriell Og Reklameprodukter AS | Professional & scientific | 2016 |
| Marketchange AS | | 2022 |
| Marlen Holding AS | | 2023 |
| Marops AS | Education | 2023 |
| Marsveien 1113 AS | Wholesale & retail | 2023 |
| Marte Herje Strømme AS | | 2023 |
| Martin Günther AS | | 2025 |
| Martins Eiendommer AS | Real estate | 2016 |
| Martinussen AS | Information & communication | 2008 |