| Glans Garasjen AS | Other services | 2025 |
| Glint AS | Health & social care | 2024 |
| Global Consulting AS | Professional & scientific | 2018 |
| Gnesom Holding AS | Real estate | 2018 |
| GNP Holding AS | Professional & scientific | 2026 |
| God Bakst AS | Education | 2021 |
| GR Solid Bygg AS | Construction | 2025 |
| Granerud Transport AS | Transport & logistics | 1998 |
| Grave Og Planering AS | Construction | 1969 |
| GS Økonomitjenester AS | Professional & scientific | 2005 |
| GT Transport AS | Transport & logistics | 2024 |
| GT Transport Da | Transport & logistics | 2020 |
| Gullbringa Solutions AS | | 2025 |
| Gullskatt AS | Real estate | 2015 |
| Gulvex AS | Wholesale & retail | 2019 |
| Gunnersen Holding AS | Financial services | 2005 |
| Gurvikdal Havfiskesenter AS | Hospitality | 2004 |
| Gustu Holding AS | Construction | 2024 |
| H Huser Holding AS | Financial services | 2017 |
| Ha Fjeldstad Holding AS | | 2025 |
| Hagatec Holding AS | Real estate | 2014 |
| Hagestande AS | | 2025 |
| Hame Fjeldstad Holding AS | Real estate | 2021 |
| Hammani Transport AS | Transport & logistics | 2025 |
| Hanne På Landet AS | Wholesale & retail | 2013 |
| Hans Ask Eiendom AS | Transport & logistics | 2007 |
| Hans Ask Holding AS | Transport & logistics | 2005 |
| Happy Boba AS | Hospitality | 2019 |
| Hbgl Holding AS | Financial services | 2008 |
| Heiha Eiendom AS | Real estate | 2020 |
| Heiha Holding AS | Construction | 2018 |
| Heiha Killingmo AS | Real estate | 2022 |
| Helge Bjørklund Holding AS | Real estate | 1994 |
| Helge Holum Holding AS | | 2023 |
| Hellen Eiendom AS | | 2025 |
| Hellenvegen 18 Og 20 AS | | 2024 |
| Hellenvegen 25 AS | Real estate | 2024 |
| Hellenvegen 26 AS | Real estate | 2017 |
| Helt Holding AS | | 2021 |
| Heni AS | Manufacturing | 2021 |
| Henkat Invest AS | | 2021 |
| Henleo-Holding AS | | 2018 |
| Henning Løvstad Holding AS | Wholesale & retail | 2016 |
| Henningsen Holding AS | Real estate | 2022 |
| Herta AS | Professional & scientific | 2015 |
| Highlander AS | Professional & scientific | 2000 |
| Himfjell Holding AS | Real estate | 2024 |
| Hockeybua Da | Wholesale & retail | 2002 |
| Hollster AS | | 2025 |
| Holstadveien 77 AS | Real estate | 2015 |
| Hos Nabo'N AS | Hospitality | 2009 |
| House & Garden AS | Wholesale & retail | 2010 |
| House of Dance Da | Wholesale & retail | 2009 |
| Hovedstadbygg AS | Construction | 2026 |
| HS Motor AS | Wholesale & retail | 2012 |
| Huser Entreprenør AS | Construction | 2006 |
| Huser Invest AS | Real estate | 2017 |
| Huset Auto AS | Wholesale & retail | 2022 |
| Husum Transport AS | Transport & logistics | 2024 |
| Hval Eiendom AS | Real estate | 2016 |
| Hval Trading AS | Wholesale & retail | 1995 |
| Hveem Og Fostad AS | Administrative & support | 2024 |
| Hvitravn AS | Information & communication | 2023 |
| Hynne AS | Real estate | 2016 |
| Håndverker’N AS | Construction | 2026 |
| Ilia Invest AS | | 2024 |
| Ime Holding AS | Real estate | 2019 |
| Immi AS | | 2020 |
| In Tre AS | Construction | 2015 |
| Inaba-Foods (Europe) GmbH Nuf | Professional & scientific | 2023 |
| Indian Curry and Tandoori Restaurant, Catering Og Bar AS | Hospitality | 2023 |
| Ingersoll Rand Norge AS | Wholesale & retail | 1990 |
| Inhouse Group AS | Wholesale & retail | 2001 |
| Inhouse Group Norway AS | Wholesale & retail | 1991 |
| Inhouse Prosjekt AS | Professional & scientific | 2020 |
| Initium Eiendom AS | Real estate | 2025 |
| Inrugs AS | Wholesale & retail | 2021 |
| J-Larsen Holding AS | | 2023 |
| Janpol AS | Transport & logistics | 2023 |
| Jasia Invest AS | | 2024 |
| Jenjo Holding AS | | 2023 |
| JL Entreprenør AS | Construction | 2002 |
| JM Elektro AS | Construction | 2025 |
| Johnsen Solution AS | Real estate | 2025 |
| Joker Holding AS | | 2025 |
| Jomek Eiendom AS | Manufacturing | 2001 |
| Jomek Sveis AS | Manufacturing | 2008 |
| Jon Dahle Bygg AS | Construction | 1998 |
| JS Impact AS | Professional & scientific | 2024 |
| K. Rønnestad Holding AS | | 2014 |
| K.A Invest AS | Financial services | 2018 |
| Kaball Invest AS | | 2017 |
| Kalvenes Investments AS | | 2026 |
| Kasper Nordmelan AS | Professional & scientific | 2006 |
| Kek Invest AS | Financial services | 1997 |
| Kerna AS | Information & communication | 2026 |
| Kev Consulting AS | Professional & scientific | 2017 |
| Kiho Anlegg AS | Construction | 2018 |
| Kirkeby Malerservice AS | Construction | 2023 |
| Kisho AS | | 2024 |