| Gots AS | Construction | 2003 |
| Gullberg Holding AS | | 2024 |
| Hadeland Investment AS | Health & social care | 2024 |
| Hakadal Bilistsenter AS | Wholesale & retail | 2008 |
| Hakadal Bygg AS | Construction | 2004 |
| Hakadal Datasmie AS | Information & communication | 2004 |
| Hakadal Golfdrift AS | Arts & recreation | 2004 |
| Hakadal Holding AS | | 2017 |
| Hakadal Legekontor AS | Health & social care | 2009 |
| Hakadal Selvvask AS | Other services | 2019 |
| Hakkespett Trepleie AS | Agriculture & fishing | 2023 |
| Hakkim Eiendom AS | Real estate | 2026 |
| Haug Og Sønner Holding AS | Real estate | 2013 |
| Haug Racing Team AS | Other services | 2025 |
| Haug Sameie Da | Agriculture & fishing | 2022 |
| Hauger Eiendom Og Utleie AS | Real estate | 2024 |
| Heik AS | Professional & scientific | 2025 |
| Hermes VVS AS | Construction | 2022 |
| HHK Holding & Consulting AS | Professional & scientific | 2005 |
| High Kites Invest AS | | 2023 |
| Hmmh Holding AS | Real estate | 2020 |
| Hulløya Invest AS | | 2021 |
| Håkedal Holding AS | Hospitality | 2021 |
| Ibloom AS | Wholesale & retail | 2018 |
| Ice Dream AS | Hospitality | 2021 |
| Ice Dream Jessheim AS | Hospitality | 2025 |
| Ice Dream Metro AS | Hospitality | 2025 |
| Iec AS | Hospitality | 2025 |
| Inconnect AS | Education | 2023 |
| Infinity Point Norge AS | Information & communication | 2018 |
| Ingelsrud Invest AS | Real estate | 2019 |
| Intersoft Invest AS | | 2005 |
| Investicon AS | Construction | 2019 |
| Investicon Entreprenør AS | Construction | 2019 |
| Ipera Eiendom AS | Real estate | 2017 |
| Is Lakkering Ans | Other services | 2002 |
| Johnsen & Stovner AS | Construction | 1979 |
| Jonathan Holding AS | | 2021 |
| Jovian Creative AS | Professional & scientific | 2023 |
| K by AS | | 2008 |
| K by Eiendom AS | Real estate | 2025 |
| K by Utleie AS | Administrative & support | 2022 |
| Kaj Consulting AS | Professional & scientific | 2017 |
| Kama Service AS | Construction | 2016 |
| Kawapizza AS | Hospitality | 2023 |
| Ken Myrvang AS | Professional & scientific | 2012 |
| Kirkebylia AS | | 2023 |
| Klich Invest AS | Manufacturing | 2015 |
| Kongskog Holding AS | | 2016 |
| Kopperud Utvikling AS | Real estate | 2020 |
| Kordel AS | | 2026 |
| Krgo AS | | 2026 |
| Lamada AS | Financial services | 2017 |
| Laxmi AS | Hospitality | 2025 |
| Legevakt Med Hjemmebesøk, Online Og Dropin Oslo AS | Health & social care | 2020 |
| Leif Ryen Eiendom AS | Real estate | 1981 |
| Life Teaching AS | Education | 2015 |
| Lifeline AS | Health & social care | 1993 |
| Lunnstaden Invest AS | Real estate | 2005 |
| Lwam AS | Real estate | 2008 |
| Låsringen AS | Professional & scientific | 2023 |
| Løten Eiendom AS | Real estate | 2013 |
| M&J Hjemmeservice AS | Administrative & support | 2020 |
| Mabetex AS | Construction | 2020 |
| Malermester Fargelux AS | Construction | 2025 |
| Mama-Mia AS | Hospitality | 2017 |
| Marine-Bjørn AS | Transport & logistics | 2014 |
| Maristua Barnehage SA | Education | 1982 |
| Maskin Og Vaktmesterservice AS | Administrative & support | 2003 |
| Mbravo Transport AS | Transport & logistics | 2023 |
| Mediclease AS | Administrative & support | 2021 |
| Medo Eiendom AS | Real estate | 2024 |
| Meka IT AS | Information & communication | 2017 |
| Menken Invest AS | Financial services | 2020 |
| Mestergjerde AS | Construction | 2002 |
| Metall Gjenvinning AS | Water & waste | 2023 |
| MH Eiendom AS | Real estate | 2010 |
| Miljøhuset Gnisten AS | Health & social care | 2017 |
| Motoparts AS | Wholesale & retail | 2022 |
| MR Secret AS | | 2024 |
| Ms-Senteret Hakadal AS | Health & social care | 2003 |
| Multimedia Connection Da | Information & communication | 1999 |
| Mørvik AS | Real estate | 2011 |
| Mørvik Eiendom AS | Real estate | 2011 |
| Nitrus AS | Manufacturing | 2006 |
| Nittedal Eiendom AS | Real estate | 2025 |
| Nittedal Helsebygg AS | Health & social care | 1993 |
| Nittedal Indoor Golf AS | Arts & recreation | 2022 |
| Nittedal Liftutleie Da | Administrative & support | 2008 |
| Nittedal Trefelling AS | Administrative & support | 2016 |
| Noah Engadalen AS | Water & waste | 2004 |
| Nocturne Furniture AS | Manufacturing | 2022 |
| Noor Hus AS | Construction | 2016 |
| Noorgruppen AS | Health & social care | 2012 |
| Nor Truck Og Maskinskole AS | Education | 2017 |
| Nordengen Holding AS | | 2026 |
| Nordisk Bil AS | Other services | 2013 |
| Norgestransport AS | Transport & logistics | 2019 |
| Norsk Underholdning AS | Wholesale & retail | 2026 |
| Norsk Uteservice AS | Mining & quarrying | 2023 |