| Langsholt Bygg AS | Construction | 2017 |
| Langsholt Eiendomsinvest AS | Real estate | 2022 |
| Langsholt Glass Service AS | Construction | 2019 |
| Larsen Handelsgartneri AS | Agriculture & fishing | 2012 |
| Leander Invest AS | | 2020 |
| Lear Group AS | Administrative & support | 2025 |
| Lindrod Hansen Multiservice AS | Construction | 2018 |
| Litebrygg AS | Wholesale & retail | 2023 |
| LK Gruppen AS | | 2026 |
| LK Solfilm AS | Other services | 2025 |
| LK Teknikk AS | | 2026 |
| LK Teknikk AS | Manufacturing | 2019 |
| Loyds Eiendom AS | Real estate | 2009 |
| Loyds Industri AS | Manufacturing | 1968 |
| LS Intertank Norge AS | Transport & logistics | 1990 |
| Lte Holding AS | | 2025 |
| M.K Holding AS | | 2023 |
| Make a Wish AS | Professional & scientific | 2024 |
| Malerfirma Lars Gunnarsson AS | Construction | 2016 |
| Maling AS | Construction | 2021 |
| Mandera AS | Wholesale & retail | 2006 |
| Marberg Holding AS | | 2022 |
| Marginbooster AS | Professional & scientific | 2010 |
| Marius Brenne AS | | 2021 |
| Martinsens AS | Professional & scientific | 2021 |
| Mathias Team AS | Construction | 2018 |
| Max Import AS | Wholesale & retail | 2014 |
| MBS Program Design AS | Information & communication | 1985 |
| Mecan Renhold AS | Administrative & support | 2022 |
| Mediakitchen AS | Professional & scientific | 2022 |
| Mediterranean Gastronomi AS | Manufacturing | 2026 |
| Mediterranean Group AS | | 2026 |
| Melektro Klavestad Installasjon AS | Construction | 2007 |
| MH Øst AS | | 2015 |
| Minar Holding AS | Administrative & support | 2021 |
| Mjørudgata 7 AS | Real estate | 2025 |
| Mme AS | | 2026 |
| Mme Økonomi Og Integrasjon AS | Professional & scientific | 2017 |
| Mobakken Barnehage AS | Education | 2023 |
| Modohus AS | Construction | 2017 |
| Mokuz AS | | 2019 |
| Moss Eiendomsselskap AS | Real estate | 2020 |
| MS Eiendom 1 AS | Real estate | 2015 |
| MSR Invest AS | | 2023 |
| Mz-Renhold AS | Administrative & support | 2026 |
| N.T.S. Eiendom AS | Real estate | 2021 |
| Navestad Bygg AS | Construction | 1998 |
| Navestad Eiendom AS | Professional & scientific | 2011 |
| Navestadtunet AS | Real estate | 2024 |
| NCF Gruppen AS | Professional & scientific | 2018 |
| Neca Pipe AS | Construction | 2012 |
| Nevan Holding AS | Real estate | 2017 |
| Nilan Norge AS | Wholesale & retail | 2012 |
| Nina Halvorsen AS | Education | 2024 |
| Norcool Holding AS | Wholesale & retail | 1986 |
| Nordic Athletica AS | Wholesale & retail | 2023 |
| Nordkak AS | Wholesale & retail | 1998 |
| Nordkapp Invest AS | Real estate | 1997 |
| Nordlo Sarpsborg AS | Information & communication | 2020 |
| Nordøstre Grimsøy Vann- Og Avløpslag SA | Water & waste | 2007 |
| Norpro Utvikling AS | Real estate | 2023 |
| Norsk Bransje Club Da | Administrative & support | 2000 |
| Norsk Isabella AS | Wholesale & retail | 1985 |
| Norsk IT Og Systemutvikling AS | Information & communication | 2026 |
| Norsk Mynthandel AS | Wholesale & retail | 2012 |
| Norsk Trafo Service AS | Manufacturing | 2021 |
| Norum Eiendom AS | Real estate | 2002 |
| Norwegian Air Castle AS | Real estate | 1999 |
| NOS5 AS | Manufacturing | 2011 |
| NTS Bryterservice AS | Manufacturing | 2022 |
| NTS Holding AS | Manufacturing | 2021 |
| NTS Kløvningsten AS | Real estate | 2021 |
| Nygårdshaugen Barnehage SA | Education | 1995 |
| Odsbu Holding AS | | 2025 |
| Olsen & Larsen Eiendom AS | | 2005 |
| Olsen & Nordhavn Varmepumpeservice AS | Construction | 2021 |
| Omfa Holding AS | Construction | 2022 |
| Opphaugveien 3 AS | Wholesale & retail | 2012 |
| Optocell AS | Professional & scientific | 2019 |
| Oredalstoppen AS | Real estate | 2026 |
| Osteopatiklinikken Fredrik Sommerseth AS | Health & social care | 2015 |
| Ovrid Holding AS | Real estate | 2016 |
| Panthera Tigris Da | Health & social care | 2020 |
| Park Media Group AS | Information & communication | 2018 |
| Parkeringsløsninger AS | Wholesale & retail | 2019 |
| Paviljongen Frisør 2 AS | Other services | 2022 |
| Paviljongen Frisør AS | Other services | 1997 |
| Paxster AS | Manufacturing | 2015 |
| Pedersen Racing AS | Wholesale & retail | 2020 |
| Per Pettersen Montasje AS | Construction | 2018 |
| Piab Lifting Automation Norway AS | Real estate | 2019 |
| Pizza Paviljongen AS | Hospitality | 2025 |
| Pizzali Eiendom AS | Real estate | 2011 |
| Pki Nor AS | Information & communication | 2023 |
| Plankebyen AS | Other services | 2020 |
| Plast Og Tredesign AS | Professional & scientific | 2020 |
| Pole Position Trafikkskole AS | Education | 2021 |
| Polinor Tjenester AS | Professional & scientific | 2014 |
| Positivista Productions AS | Information & communication | 2012 |
| Pretec AS | Wholesale & retail | 1999 |