| Krogh & Co Advokatfirma Da | Professional & scientific | 2002 |
| Krogh Invest AS | Real estate | 2003 |
| KTT Invest AS | Health & social care | 2017 |
| Kurås Interiør Transport AS | Transport & logistics | 2017 |
| L.J Capital AS | | 2022 |
| Landerud AS | Real estate | 2006 |
| Landerud Brevik Invest AS | | 2024 |
| Landerud Holding AS | Real estate | 2005 |
| Landerudsenteret AS | Real estate | 2024 |
| Larsen Og Syversen Vedlikehld Da | Construction | 1990 |
| LC Entreprenør AS | Real estate | 2018 |
| Lce Holding AS | | 2018 |
| Lean Management AS | Professional & scientific | 2005 |
| Lefdal Finans AS | Professional & scientific | 2016 |
| Les Arcs Apparel AS | Wholesale & retail | 2024 |
| Lift N Run Fitness AS | Arts & recreation | 2023 |
| Lindbak Import AS | Wholesale & retail | 2018 |
| Liviq Brands AS | Wholesale & retail | 2025 |
| Look East Invest AS | Financial services | 2009 |
| Lot Gruppen AS | Professional & scientific | 2026 |
| Ludvig Svensson Norge AS | Wholesale & retail | 1992 |
| Lundsen Drift AS | Real estate | 2023 |
| Lundsen Holding AS | Real estate | 2023 |
| Ly Consulting AS | Professional & scientific | 2023 |
| Lysglimt Elektro AS | Construction | 2009 |
| Lønn VVS & Bygg AS | Construction | 2026 |
| M.E Training AS | Education | 2026 |
| Macgyver Entertainment AS | Arts & recreation | 2007 |
| Mahega AS | Financial services | 2005 |
| Maler 4 Deg AS | Construction | 2020 |
| Marianne Orderud AS | | 2020 |
| Matomo AS | Real estate | 2020 |
| MD Kapital AS | Construction | 2020 |
| Mg-Bygg AS | Construction | 2015 |
| Miljøhavn AS | Wholesale & retail | 2019 |
| Mojo Investering AS | Real estate | 2020 |
| Mona Christine Wiger Konsult AS | Professional & scientific | 2021 |
| Motion Control Senteret AS | Wholesale & retail | 2014 |
| Mountaingirl AS | | 2023 |
| MP Group AS | Wholesale & retail | 2023 |
| Mtank Holding AS | Professional & scientific | 2023 |
| Mudo Gym Oppegård AS | Arts & recreation | 2006 |
| Munkevik Forvaltning AS | Information & communication | 2005 |
| Musicstream AS | Wholesale & retail | 2024 |
| Måha Holding AS | Real estate | 2023 |
| Måha I AS | Real estate | 2023 |
| Måha II AS | Real estate | 2023 |
| Møller Materials Handling GmbH | Construction | 2001 |
| N. J. Holding AS | | 2022 |
| Native Media AS | Information & communication | 2017 |
| Navenda Båtleveranser AS | Transport & logistics | 2022 |
| Neli AS | Wholesale & retail | 2018 |
| Nereiderna Da | Professional & scientific | 2003 |
| Nesseblomst AS | Wholesale & retail | 2023 |
| Night Owls & Indeep Action Nuf | Professional & scientific | 2022 |
| Nisses Holding AS | Professional & scientific | 2023 |
| Noaco AS | | 2024 |
| Nor-Vemo Ltd Nuf | Construction | 2004 |
| Norautomasjon AS | Manufacturing | 2017 |
| Nordbohus Oslo AS | Real estate | 2024 |
| Nordic Auto El AS | Construction | 2012 |
| Nordic FPC Norge Nuf | Construction | 2013 |
| Nordic Investment Group AS | Real estate | 2003 |
| Nordic Safety Group HMS AS | Wholesale & retail | 2017 |
| Nordic Textile AS | Wholesale & retail | 2023 |
| Nordstrand Gjerdefabrikk AS | Manufacturing | 2016 |
| Nornes IT AS | | 2018 |
| Norsk Audioteknikk AS | Wholesale & retail | 1996 |
| Norwegian Marine Construction AS | Manufacturing | 1989 |
| Novus AS | Information & communication | 2005 |
| NTG Air & Ocean AS | Transport & logistics | 2012 |
| NTG Road Norway AS | Transport & logistics | 2015 |
| Nxtesg AS | Information & communication | 2023 |
| Oab Consulting AS | Information & communication | 2012 |
| Obass AS | Construction | 2020 |
| Olaussen Ventures AS | | 2024 |
| Omniscient Medical AS | Professional & scientific | 2017 |
| Oreb Invest AS | Real estate | 2025 |
| Orehagen Consultancy and Investment AS | Professional & scientific | 2018 |
| Osis AS | Professional & scientific | 2025 |
| Oslo Byggassistanse AS | Construction | 2015 |
| Oslo Båtutstyr AS | Wholesale & retail | 2021 |
| Oslo Sonic AS | Information & communication | 2026 |
| Parge Invest AS | Real estate | 2014 |
| Pauck Invest AS | | 2019 |
| Paul Amundsen Holding AS | Real estate | 2016 |
| Pavy Holding AS | | 2022 |
| Payexp AS | Professional & scientific | 2024 |
| Pellygata 42 AS | Real estate | 2016 |
| Phab No Branch Nuf | Manufacturing | 2019 |
| Plibonigi AS | Information & communication | 2016 |
| Poquito Holding AS | | 2025 |
| Premium Brands AS | Wholesale & retail | 2017 |
| Presenza AS | Professional & scientific | 2016 |
| Product Office AS | Professional & scientific | 2017 |
| Proff Property AS | Real estate | 2019 |
| Proff Rør Og Bygg | Wholesale & retail | 2021 |
| Proff Totalentrepenør AS | Construction | 2021 |
| Profilsport AS | Wholesale & retail | 2012 |
| Project Island AS | Arts & recreation | 2025 |