| Hendtmann AS | Professional & scientific | 2016 |
| Hendy AS | Other services | 2024 |
| Hening AS | Financial services | 2017 |
| Henning Johansen 90 AS | Professional & scientific | 2025 |
| Henningsmo Holding AS | | 2024 |
| Henrik Angells Gate 1 AS | Real estate | 2021 |
| Henrik Solem Holding AS | | 2025 |
| Hentho AS | | 2019 |
| Hepp Holding AS | | 2023 |
| Heppe Forlag AS | Information & communication | 2026 |
| Hera Store AS | Other services | 2014 |
| Herakles Holding AS | Financial services | 2016 |
| Herbergåsen Energipark AS | Real estate | 2026 |
| Herbo Invest AS | Real estate | 2005 |
| Herc Consulting AS | Professional & scientific | 2020 |
| Herc Holding AS | Real estate | 2020 |
| Hereditas Capital AS | Real estate | 2011 |
| Hering AS | Real estate | 2005 |
| Herje Holding AS | | 2005 |
| Herlof AS | Professional & scientific | 2013 |
| Herma Invest AS | Financial services | 2005 |
| Hermano Invest AS | | 2014 |
| Hermansson & Høgdahl Sportconsulting Ans | Education | 1999 |
| Hermstad Eiendom AS | Real estate | 2024 |
| Hermstad Holding AS | Construction | 2024 |
| Hersir Invest AS | Real estate | 2019 |
| Herstory AS | Information & communication | 2019 |
| Hertzenberg-Nafstad AS | Professional & scientific | 1997 |
| Herøy Eiendom AS | Real estate | 2009 |
| HESELE14 AS | Real estate | 2024 |
| Hesja Holding AS | | 2019 |
| Hest Holding AS | Financial services | 2005 |
| Hestad Holding AS | Financial services | 2016 |
| Hestmann Eiendom AS | Real estate | 1996 |
| Hesø Eiendom AS | Real estate | 2019 |
| Hevd Bakeri AS | Manufacturing | 2019 |
| Hevd Pizzeria AS | Hospitality | 2019 |
| Heven Holding AS | Real estate | 2024 |
| Hexa AS | Wholesale & retail | 1996 |
| Hexa Eiendom AS | Real estate | 2022 |
| Hexa Holding AS | Wholesale & retail | 2005 |
| Hf-Invest AS | Real estate | 2007 |
| HFL IT Solutions AS | Information & communication | 2023 |
| HG Optimus AS | Real estate | 2015 |
| HGH Ventures AS | Information & communication | 2024 |
| HGR Eiendomsutleie Ans | Real estate | 2011 |
| HGR Invest AS | Wholesale & retail | 2009 |
| HH Eiendomsinvest AS | Real estate | 2016 |
| HH Pi AS | Real estate | 2020 |
| HHB Invest AS | | 2020 |
| HHW AS | | 2020 |
| Hiba AS | Professional & scientific | 2005 |
| Hibo Capital AS | | 2025 |
| Hibrasto AS | Real estate | 2017 |
| Hida Holding AS | | 2020 |
| Hifi Life AS | Wholesale & retail | 2018 |
| Highlife Holding AS | Real estate | 2018 |
| Hiil AS | Wholesale & retail | 2020 |
| Hila AS | | 2018 |
| Hila Drift AS | Education | 2007 |
| Hilde Borkmo Holding AS | | 2025 |
| Hilde Jørstad AS | Wholesale & retail | 2014 |
| Hilde Private Holding AS | | 2021 |
| Hildecarma AS | Financial services | 2017 |
| Hildegard Forlag AS | Information & communication | 2024 |
| Hildegard Holding AS | | 2025 |
| Hildegun AS | Financial services | 2011 |
| Hildn AS | Education | 2020 |
| Hildrum Eiendom AS | Real estate | 1990 |
| Hildrum Holding AS | Financial services | 2005 |
| Hillel Invest AS | | 2020 |
| Hillestad Holding AS | | 2005 |
| Hiloni Invest AS | | 2022 |
| Himalako Sherpa AS | Hospitality | 2024 |
| Himle Thorsen Holding AS | | 2025 |
| Hinc AS | | 2026 |
| Hindklev Gruppen AS | Wholesale & retail | 2021 |
| Hinjo AS | Professional & scientific | 2014 |
| Hioxx AS | Professional & scientific | 2011 |
| Hiso Invest AS | | 2021 |
| Hitra Boligutvikling AS | Real estate | 2017 |
| Hitra Experience AS | Real estate | 2020 |
| HJ Helliksen Holding AS | | 2018 |
| HJ Investments AS | Real estate | 2009 |
| HJ Investments Finans AS | Real estate | 2010 |
| Hjalmar Prosjekt AS | Real estate | 2012 |
| Hjard Jensen Prosjektservice AS | Professional & scientific | 2014 |
| Hjelkrem Invest AS | Financial services | 2005 |
| Hjelmstad Holding AS | Professional & scientific | 2020 |
| Hjelpa AS | Education | 2025 |
| Hjelsengtoppen AS | Real estate | 2021 |
| Hjem Invest AS | Real estate | 2021 |
| Hjertemedisin Nuf | Other services | 2010 |
| Hjertenæs Invest AS | Professional & scientific | 2005 |
| Hjort Eiendom AS | Real estate | 2021 |
| Hjortefot AS | Financial services | 2005 |
| Hjulstad Holding AS | Real estate | 2019 |
| Hjørnematen AS | Hospitality | 2021 |
| HK Bits AS | Information & communication | 2020 |
| HK Holding AS | | 2005 |