| H&P Neglesalong AS | Other services | 2015 |
| Habo Eiendom AS | Real estate | 2012 |
| Habo Invest AS | Real estate | 2018 |
| Hajir Holding AS | | 2025 |
| Hallingstad Dykk AS | Construction | 2020 |
| Hamachi Sushi AS | Hospitality | 2018 |
| HDH AS | | 2023 |
| Hegna Invest AS | | 2024 |
| Helios AS | Wholesale & retail | 2023 |
| Helvetia Capital AS | Professional & scientific | 2025 |
| Hetti Eiendom AS | Real estate | 2015 |
| Hetti Holding AS | Real estate | 2005 |
| HQ Holding AS | | 2007 |
| Hseq Consulting Investment AS | Professional & scientific | 2021 |
| Iak Holding AS | Real estate | 2015 |
| Ilyas Tayyeb AS | Transport & logistics | 2023 |
| Ingtech AS | Construction | 2014 |
| Iraki Invest AS | | 2015 |
| Iraki Nutrition AS | Education | 2011 |
| Irontech AS | Wholesale & retail | 2004 |
| Ixa Invest AS | Wholesale & retail | 2005 |
| J.E Hallstensen AS | | 2023 |
| Jah Holding AS | Information & communication | 2022 |
| JC Productions AS | Information & communication | 2016 |
| John Carew AS | | 1999 |
| Ju-Gl Service AS | Administrative & support | 2023 |
| Justgoodstuff AS | Wholesale & retail | 2025 |
| Jutini AS | Real estate | 2012 |
| Karol Byggtjenester AS | Construction | 2024 |
| Kayisoglu Transport AS | Transport & logistics | 2025 |
| Kes-Holding AS | | 2022 |
| King Eiendom AS | Real estate | 2026 |
| Kjølevakten AS | Construction | 2024 |
| Kjøs Holding AS | Financial services | 2014 |
| Knusand AS | Information & communication | 2005 |
| Kolv Reinsnes Holding AS | | 2020 |
| Kompis Gruppen AS | | 2026 |
| Konstali Holding AS | Administrative & support | 2023 |
| KR Snekker & Maler AS | Construction | 2025 |
| Krags AS | Real estate | 2019 |
| KST Soltun AS | | 2020 |
| Kulmoen Nes AS | | 2024 |
| Kvinge Logistikk Montasje AS | Construction | 2016 |
| Larshuso AS | | 2023 |
| Leivestad Holding AS | Real estate | 2019 |
| Leivestad JR. Holding AS | | 2022 |
| Leivestad Maskin & Motorsport AS | Other services | 2022 |
| Lemox Invest AS | | 2022 |
| Libra Regnskap AS | Professional & scientific | 2013 |
| Lille Asia Holding AS | | 2006 |
| Linns Renhold AS | Administrative & support | 2021 |
| LJM AS | Real estate | 2006 |
| LJM I AS | Real estate | 2013 |
| Lkkh Holding AS | | 2025 |
| Lompa Holding AS | | 2025 |
| Losby Bruk AS | Agriculture & fishing | 2017 |
| Losby Gods AS | Hospitality | 1989 |
| Losby Golfpark AS | Arts & recreation | 1997 |
| Losby Lagerutleie AS | Real estate | 2025 |
| Losby Ridesenter AS | Education | 2014 |
| Losbyveien 1 AS | Real estate | 2019 |
| Losbyveien Legesenter AS | Health & social care | 2011 |
| Lu Hoang Holding AS | | 2005 |
| Lund Elektro Installasjon AS | Construction | 2011 |
| Lund Fiks AS | Construction | 2023 |
| Lyd & Lys Pro AS | Arts & recreation | 2025 |
| Lykkelig Eiendom AS | Construction | 2025 |
| Løkka Drift AS | Administrative & support | 2018 |
| Løkka Eiendom AS | Real estate | 2015 |
| Lørenskog Byggkvalitet AS | Construction | 1995 |
| Lørenskog Jaktsameie | Real estate | 1995 |
| Løytnantsbekken AS | Real estate | 2011 |
| Ma Solutions AS | Information & communication | 2025 |
| Macaro AS | | 1998 |
| Mamodo Invest AS | | 2022 |
| Manzil AS | Real estate | 2014 |
| Mapi Invest AS | | 2021 |
| Marit Engelstad Holding AS | Financial services | 2005 |
| Marius Invest AS | | 2005 |
| Maskog Invest AS | | 2022 |
| Mati Services AS | Real estate | 2024 |
| MB Snekker AS | Construction | 2021 |
| Meh Investment AS | Real estate | 2012 |
| Meisal & Bodin AS | Financial services | 2005 |
| Menoa AS | Wholesale & retail | 2026 |
| Millennium Bygg Da | Construction | 1998 |
| Miraga AS | Wholesale & retail | 2024 |
| Missmamedova AS | Health & social care | 2023 |
| Moger Invest AS | | 2022 |
| Monas Vintage AS | Wholesale & retail | 2024 |
| Monday Morning AS | Education | 2006 |
| Monica H. Haugland | Information & communication | 2013 |
| Motion Holding AS | | 2023 |
| Movemonter AS | Transport & logistics | 2026 |
| Moveshine Da | Administrative & support | 2026 |
| Mur Og Bygg Kristiania AS | Construction | 2022 |
| Muriøst AS | Construction | 2025 |
| Måken Forlag AS | Information & communication | 2023 |
| Nam Sushi Viet-Thai AS | Hospitality | 2015 |
| Nesset Invest AS | Professional & scientific | 2019 |