| Gullbrandsen Holding AS | Other services | 2016 |
| Gulli Næringstomter AS | Real estate | 2022 |
| Gullmannen Tønsberg AS | Wholesale & retail | 2026 |
| Gullro AS | Other services | 2022 |
| Gullrønning H G Rønning AS | Wholesale & retail | 1992 |
| Gulsrud Booking AS | Administrative & support | 2020 |
| Gulv Og Hjem AS | Construction | 2025 |
| Gulvgalleriet AS | Manufacturing | 2012 |
| Gulz-Invest AS | | 2023 |
| Gustav-Anker Amundsen AS | Financial services | 1993 |
| Gvi Rådgivning AS | Professional & scientific | 2005 |
| Gyldne Snitt AS | Arts & recreation | 2005 |
| H E Invest AS | Financial services | 2005 |
| H. Henriksen AS | Manufacturing | 1982 |
| H.D Holding AS | Real estate | 2019 |
| H.U.S. AS | Real estate | 2010 |
| H7 Capital AS | | 2026 |
| Haabet AS | Real estate | 1991 |
| Hacienda Ans | Real estate | 2004 |
| Hacienda Film AS | Information & communication | 2014 |
| Haffs AS | Professional & scientific | 2022 |
| Hage Best Holding AS | Real estate | 2023 |
| Hagetrivsel AS | Wholesale & retail | 2011 |
| Hair Collection AS | Wholesale & retail | 1988 |
| Halfdan Wilhelmsens Allè 42 AS | Real estate | 2012 |
| Halvdan Wilhelmsemsallé 23 AS | Real estate | 2006 |
| Hamborg's Snekkeri AS | Construction | 2012 |
| Hamborgs AS | Professional & scientific | 2026 |
| Hamnehagen Eiendom AS | Real estate | 2026 |
| Handelshuset Foyn AS | Real estate | 2025 |
| Hanover Square AS | Professional & scientific | 2020 |
| Hanover Square Holdings AS | | 2020 |
| Hansen Engineering AS | Professional & scientific | 2023 |
| Hansen Partnership AS | Professional & scientific | 2006 |
| Hansen Pharmaservice AS | Professional & scientific | 2016 |
| Hanto Invest AS | Financial services | 2012 |
| Hardware Innovation Da | Administrative & support | 2010 |
| Harento AS | Financial services | 2018 |
| Harfag Holding AS | Wholesale & retail | 2005 |
| Harholding AS | Information & communication | 2017 |
| Harutti AS | Wholesale & retail | 2022 |
| Hasle Eiendomsutvikling AS | Real estate | 2015 |
| Hasle Invest AS | Real estate | 2012 |
| Hassum Holding AS | | 2019 |
| Hatlemark AS | Professional & scientific | 2025 |
| Hatlemark Holding AS | Professional & scientific | 2025 |
| Haugen Eiendom AS | Real estate | 1991 |
| Haugianer Eiendomsdrift AS | Administrative & support | 2023 |
| Haugianer Holding AS | Administrative & support | 2023 |
| Haugland Property AS | Real estate | 2009 |
| Haugrud Bygg AS | Real estate | 2006 |
| Hausken & Sundet Da | Other services | 1998 |
| Havariet AS | Hospitality | 1991 |
| Havariet Holding AS | Hospitality | 2016 |
| Havna Eiendomsutvikling AS | Real estate | 2014 |
| Havneportalen AS | Real estate | 2018 |
| Havsfjell AS | Real estate | 2020 |
| Havstadodden AS | Real estate | 2017 |
| Havørn Boligutvikling AS | Professional & scientific | 2017 |
| Havørn Holding AS | Professional & scientific | 2010 |
| Hawesa AS | Real estate | 2010 |
| Hawri Jan AS | Other services | 2018 |
| Hayes Invest AS | Professional & scientific | 2023 |
| Hazumi AS | Information & communication | 2006 |
| HBL Advokatfirma Haraldsen Bydal Lie Da | Professional & scientific | 1965 |
| HBS Solhaug AS | | 2023 |
| HC Tønsberg AS | Other services | 2014 |
| Heads Up Eik AS | Other services | 2011 |
| Healing Heart Ventures AS | Arts & recreation | 2025 |
| Healthy to 100 AS | Education | 2023 |
| Hebbe Sport & Fashion AS | Wholesale & retail | 2016 |
| Heber Holding AS | Information & communication | 2014 |
| Hegg Bygg AS | Construction | 2023 |
| Hegg Investment AS | Construction | 2005 |
| Heggelund Holding AS | Real estate | 2019 |
| Heggen Invest AS | | 2025 |
| Heidrun Tapperi AS | Wholesale & retail | 2016 |
| Heimdal Blomster Og Gaver AS | Wholesale & retail | 2021 |
| Heimdalsvingen 1 AS | Real estate | 2019 |
| Heimtun Regnskap & Rådgivning AS | Professional & scientific | 2000 |
| Hekneby Holding AS | | 2024 |
| Hel Bolig AS | Construction | 2018 |
| Hel Næringsinvest AS | | 2026 |
| Helau Invest AS | Real estate | 2022 |
| Helfamilie AS | Health & social care | 2024 |
| Helge AS | Professional & scientific | 2020 |
| Helgeland Verdi Og Invest AS | Other services | 2019 |
| Helhetlig Helse E&M AS | Other services | 2025 |
| Helhetsterapi AS | Education | 1995 |
| Helikopter AS | Transport & logistics | 2024 |
| Helitrans Norge AS | Transport & logistics | 2024 |
| Hellero Eiendom AS | Real estate | 2018 |
| Hellum Diamant Holding AS | | 2019 |
| Helsekom AS | Professional & scientific | 2025 |
| Hem Tech AS | | 2024 |
| Henning Heimtun Invest AS | Real estate | 2005 |
| Henning Heimtun Økonomi Og Finans Konsulent AS | Real estate | 2018 |
| Henrich AS | | 2023 |
| Henriksen Group AS | Manufacturing | 2023 |
| Henriksen Marine AS | Professional & scientific | 2025 |