| Globe Aurea AS | Real estate | 2025 |
| Glorious AS | Administrative & support | 2020 |
| Glorvigen Holding AS | | 2022 |
| Gndr Consulting AS | Professional & scientific | 2020 |
| Gndr Holding AS | Professional & scientific | 2017 |
| Grafs AS | Professional & scientific | 2019 |
| Grafs Consulting AS | Professional & scientific | 2019 |
| Grev Legesenterdrift AS | Health & social care | 2017 |
| Greverud Eiendomsutvikling AS | Real estate | 2007 |
| Greverud Fysioterapi Og Manuellterapi Da | Health & social care | 1990 |
| Greverud Invest AS | Administrative & support | 2003 |
| Greverud Pøbben Ans | Hospitality | 1992 |
| Greverud Sushi & Wok AS | Hospitality | 2014 |
| Greverudlia Vel SA | Real estate | 1974 |
| Grevrud Grill Og Indisk AS | Hospitality | 2026 |
| Grini Lagerservice Og Eiendomsdrift AS | Real estate | 1990 |
| Growth Holding AS | | 2023 |
| GTP Holding AS | Professional & scientific | 2022 |
| Gulbrandsen Media AS | Information & communication | 2020 |
| Gullnæss Holding AS | | 2026 |
| Halvorsen Holding Invest AS | Financial services | 2015 |
| Hard Work Invest AS | Real estate | 1986 |
| Hartman AS | Information & communication | 2013 |
| Haukeliveien 48 AS | Real estate | 2012 |
| Havspire AS | Agriculture & fishing | 2025 |
| HB Rosseland AS | Professional & scientific | 2013 |
| Heggelund Utvikling AS | Real estate | 2017 |
| Helikonsult AS | Professional & scientific | 2019 |
| Helitracks AS | Professional & scientific | 2019 |
| Helsetica AS | Health & social care | 2018 |
| Henbra AS | Information & communication | 2015 |
| Henell Holding AS | | 2026 |
| Henning Holding AS | Wholesale & retail | 2019 |
| HHH AS | Financial services | 2017 |
| HHV AS | | 2024 |
| Historien Om Pi AS | Professional & scientific | 2017 |
| Hjørnetannsbedriften AS | Health & social care | 2021 |
| Hold-My-Beer AS | | 2022 |
| Holmstrøm Holding AS | | 2026 |
| Homm Invest AS | | 2020 |
| Horn Handel & Eiendom AS | Professional & scientific | 2020 |
| HPB Holding AS | Real estate | 2014 |
| HS VVS AS | Construction | 2022 |
| HTH Consulting AS | Professional & scientific | 2022 |
| Hubert Rehabilitering AS | Construction | 2007 |
| Hudlege Rizvi AS | Health & social care | 2026 |
| Hudpleiesenteret for Han Og Henne AS | Health & social care | 2015 |
| Hundetepper AS | Wholesale & retail | 2021 |
| Hurra Invest AS | | 2021 |
| HVG Holding AS | Financial services | 2015 |
| Håvard Harstad Holding AS | | 2026 |
| Høgh Trafikkskole AS | Education | 2008 |
| Høidalen Holding AS | Arts & recreation | 2005 |
| Ibog AS | Construction | 2023 |
| Ida Invest AS | Wholesale & retail | 2016 |
| Ihamm AS | Financial services | 2016 |
| Imres Granola AS | Manufacturing | 2023 |
| Ims AS | Professional & scientific | 1998 |
| Imvik AS | Real estate | 2019 |
| Inet Media AS | Information & communication | 2016 |
| Inova Omsorg AS | Administrative & support | 2026 |
| Insj AS | Information & communication | 2015 |
| Installatøren Oslo AS | Construction | 2003 |
| Investigator AS | | 2022 |
| Investmentfunction AS | | 2022 |
| Ivar Løge AS | Real estate | 2000 |
| J.R Global Invest AS | | 2025 |
| J.R Ventures AS | Professional & scientific | 2020 |
| J.R.S Invest AS | | 2025 |
| Jada Holding AS | Financial services | 2005 |
| Jarl AS | Professional & scientific | 1992 |
| Jarle Engesveen AS | Professional & scientific | 2023 |
| Jarål Termotransport AS | Transport & logistics | 2019 |
| Jcu-Holding AS | | 2025 |
| JDS AS | Hospitality | 2025 |
| JFT Invest AS | Real estate | 2005 |
| Jo-Jo Invest AS | Financial services | 2018 |
| Jonem Dev AS | Information & communication | 2024 |
| Jonem Holding AS | Information & communication | 2023 |
| JRL AS | Manufacturing | 1999 |
| Juluc Holding AS | | 2020 |
| Kappveien 11 AS | | 2020 |
| Karim Eating AS | Hospitality | 2024 |
| Kasofil AS | Education | 2010 |
| Kaspersen & Johansen AS | Health & social care | 2021 |
| Katomami AS | Financial services | 2018 |
| Katt Invest AS | Financial services | 2005 |
| Kenguru AS | Health & social care | 2023 |
| Kiavi AS | Wholesale & retail | 2026 |
| Kielland Invest AS | Financial services | 2015 |
| Kildal Kraft AS | Energy | 2015 |
| Kjelland Snekkerverksted AS | Construction | 2014 |
| Kjelsås Kran Og Transport AS | Transport & logistics | 2016 |
| Kjerringhøgda AS | Education | 2022 |
| Kjetil Bortelid AS | Real estate | 2023 |
| Klingelberg AS | Professional & scientific | 2016 |
| Klingelberg Products AS | Professional & scientific | 2019 |
| Kmi Holding AS | | 2022 |
| Kodeword AS | | 2021 |
| Kolmannskog Holding AS | Financial services | 2013 |