| Jordsamvirke - Ukraina Svartjordfondet Ba | Other services | 2006 |
| Jørgensen Eiendom AS | Real estate | 2000 |
| Ka Rørteknikk AS | Construction | 2025 |
| Kaffe Bella Royal AS | Hospitality | 2017 |
| Kapital-Styring AS | Transport & logistics | 1996 |
| Kardia AS | Wholesale & retail | 2017 |
| Karlstad Shipping AS | Transport & logistics | 1996 |
| Kastanje AS | | 2026 |
| Katrine Slangsvold AS | Wholesale & retail | 2026 |
| Kazoku Holding AS | | 2025 |
| Kennet Axelsen Johansen Service AS | Construction | 2015 |
| Kenobiland Holding AS | Arts & recreation | 2026 |
| KEYS4COINS AS | Information & communication | 2018 |
| KGS Invest AS | | 2019 |
| Kinoa Ly AS | Health & social care | 2026 |
| Kintsugi AS | | 2023 |
| Kiosken Nesset AS | Wholesale & retail | 2017 |
| Kiosken På Hjulet AS | Hospitality | 2019 |
| Kjærnes Marina AS | Transport & logistics | 2026 |
| Koeste AS | | 2022 |
| Kokkopris AS | Wholesale & retail | 2012 |
| Koksvik Nilsen Invest AS | Financial services | 2005 |
| Kolbotn Taxi AS | Transport & logistics | 2019 |
| Kollen Bygg AS | Construction | 2015 |
| Kollen Mur Og Våtrom AS | Construction | 2025 |
| Kollengruppen AS | Construction | 2019 |
| Kolly AS | Wholesale & retail | 2001 |
| Kongeveien Vann- Og Avløpslag SA | Water & waste | 2022 |
| Kontenta AS | Professional & scientific | 2023 |
| Krem Invest AS | Financial services | 2006 |
| Kri Kommunikasjon AS | Professional & scientific | 2020 |
| Krijo Consult AS | Professional & scientific | 2017 |
| Krosby Eiendom AS | Real estate | 2021 |
| Krosby Invest AS | Real estate | 2020 |
| Kultti AS | | 2023 |
| Kursoria AS | Education | 2021 |
| Kveldroveien Eiendom AS | Arts & recreation | 2014 |
| Kyros Forlag AS | Information & communication | 2020 |
| Lager & Industrisystemer AS | Wholesale & retail | 2001 |
| Lankyland Holding AS | Information & communication | 2020 |
| Larshyboy AS | Education | 2014 |
| Lemon Holding AS | | 2026 |
| Leo Winther AS | Wholesale & retail | 2009 |
| Leon Mur Og Puss AS | Construction | 2012 |
| Liahøi SA | Real estate | 2012 |
| Liahøis Venner | Other services | 2012 |
| Lillegård AS | Professional & scientific | 2025 |
| Lind G Holding AS | Real estate | 2021 |
| Linkt AS | Professional & scientific | 2012 |
| Livesys AS | Information & communication | 2022 |
| Livingsport AS | Wholesale & retail | 2015 |
| Livio Utvikling AS | Real estate | 2020 |
| Liwbygg AS | Construction | 2022 |
| LUCKY7 AS | Arts & recreation | 2014 |
| LUCKY7 Stables AS | Arts & recreation | 2025 |
| Lysne Bygg & Eiendom AS | | 2023 |
| Lyspæren Invest AS | | 2022 |
| Lærke Vinterbro AS | Wholesale & retail | 2026 |
| Lønnåsvegen Invest AS | | 2026 |
| Løvstad Naturbarnehage SA | Education | 2004 |
| M 71 Bygg Magnus Larsson | Construction | 2002 |
| Magnussen Mathisen Anlegg AS | Construction | 2026 |
| Mahfoud Group AS | | 2023 |
| Makranda Eiendom AS | Real estate | 2022 |
| Makronella AS | Wholesale & retail | 2022 |
| Mannaz AS | Professional & scientific | 2018 |
| Marineservice Jakobsen AS | Arts & recreation | 2016 |
| Martine Desiree Støback AS | Wholesale & retail | 2026 |
| Maxplay Norge AS | Wholesale & retail | 2017 |
| Mbi Group AS | Real estate | 2005 |
| Mediakonsult AS | Information & communication | 2025 |
| Merk Renhold AS | Administrative & support | 2016 |
| Meskestad Holding AS | Real estate | 2020 |
| Metnor AS | Real estate | 2000 |
| MGK Management AS | Financial services | 2015 |
| Midtbø Transport AS | Transport & logistics | 2009 |
| Miljøgruppen AS | Wholesale & retail | 2019 |
| Minmax Invest AS | Real estate | 2021 |
| Mirka OY Nuf | Wholesale & retail | 2008 |
| MK Drift AS | Administrative & support | 2023 |
| Modman AS | | 2013 |
| Moen Hyperaktiv AS | | 2026 |
| Moloteket AS | Professional & scientific | 2025 |
| Moxie Group AS | Administrative & support | 2016 |
| MS Transport Nuf | Transport & logistics | 2020 |
| MX2 Sprinkler AS | Wholesale & retail | 2022 |
| My Invest AS | Health & social care | 2019 |
| Møbelringen Follo AS | Wholesale & retail | 2014 |
| Mølle Kraft Og Eiendom 2 AS | | 2024 |
| Mølle Kraft Og Eiendom AS | Real estate | 2018 |
| Nabohage AS | Information & communication | 2023 |
| Nannestad Miljøgrend AS | Real estate | 2019 |
| Nautic Selection AS | Transport & logistics | 2011 |
| Navnlogo AS | Wholesale & retail | 2024 |
| Nebba Eiendomsutvikling AS | Real estate | 2008 |
| Nerhus Bygg AS | Construction | 2026 |
| Nerijus Ignatavicius Byggefirma Nuf | Construction | 2010 |
| Nesh Datacenter Investments AS | | 2026 |
| Nesh Holding AS | | 2025 |
| Nesodden Taxi AS | Transport & logistics | 2019 |