| Heibergløkka Boliglag AS | Households | 1950 |
| Heid Gruppen AS | Real estate | 2019 |
| Heid Supply AS | Wholesale & retail | 2026 |
| Heid Travel AS | Professional & scientific | 2026 |
| Heide Holding AS | Financial services | 2008 |
| Heide I AS | Real estate | 1988 |
| Heidelberg Materials Betong Norge AS | Manufacturing | 1983 |
| Heidelberg Materials Norway AS | Manufacturing | 1999 |
| Heidelberg Materials Prefab Contiga Holding AS | Manufacturing | 1996 |
| Heidelberg Materials Sement Norge AS | Manufacturing | 1983 |
| Heidem Holding AS | Financial services | 2016 |
| Heidenhain Scandinavia AB Nuf | Wholesale & retail | 2004 |
| Heidi Auster AS | Other services | 2006 |
| Heidi Ihlen AS | Health & social care | 2007 |
| Heidi Pran AS | Other services | 2012 |
| Heidr AS | Real estate | 2020 |
| Heie Utleie AS | Information & communication | 2025 |
| Heiene Regnskap AS | Professional & scientific | 2015 |
| Heier Finans AS | Professional & scientific | 2018 |
| Heier Green Investments AS | Professional & scientific | 2021 |
| Heier Holding AS | | 2024 |
| Heiervang Communications AS | Professional & scientific | 2023 |
| Heikraft AS | Energy | 2005 |
| Heile Deg AS | Other services | 2021 |
| Heilo Eiendom AS | Real estate | 2004 |
| Heilo Holding AS | | 2025 |
| Heilo Invest AS | Real estate | 2000 |
| Heilo Prosjekt I AS | Real estate | 2021 |
| Heilo Real Estate I AS | Real estate | 2021 |
| Heilt Sytalaust AS | Professional & scientific | 2023 |
| Heim Consulting AS | Professional & scientific | 2022 |
| Heim European Residential Development SLP Norway AS | Real estate | 2021 |
| Heim Global Investor AS | Financial services | 2021 |
| Heim Group AS | Information & communication | 2026 |
| Heim Gruppen AS | Real estate | 2015 |
| Heim Hytter AS | Construction | 2019 |
| Heim Skiservice AS | Wholesale & retail | 2025 |
| Heim ST. Hanshaugen AS | Hospitality | 2016 |
| Heim Studios AS | Professional & scientific | 2025 |
| Heim Te Mor AS | | 2020 |
| Heim TV AS | Information & communication | 2019 |
| Heim Ukrf SLP Norway AS | | 2023 |
| Heim Villa AS | Real estate | 2025 |
| Heim-Holding AS | | 2025 |
| Heimande AS | Real estate | 2022 |
| Heimande Drift AS | Construction | 2024 |
| Heimcare AS | Wholesale & retail | 2022 |
| Heimdal Matsenter AS | Wholesale & retail | 2015 |
| Heimdal Park AS | | 2021 |
| Heimdal Soltun AS | Real estate | 2022 |
| Heimdal-Hotell AS | Real estate | 1990 |
| Heimdall Gruppen AS | Financial services | 1998 |
| Heimdall Kapital AS | Real estate | 2024 |
| Heimdall Management AS | Real estate | 2026 |
| Heimdall Net Defense Da | Information & communication | 2001 |
| Heimdall Power AS | Information & communication | 2015 |
| Heimdalsgata 19-21 AS | Real estate | 2021 |
| Heimdalsgata 2 Næring AS | Real estate | 2022 |
| Heimdalsgata Eiendom AS | Real estate | 2010 |
| Heimdalsgata Holding AS | Real estate | 2022 |
| Heimdalsgaten 1 AS | Real estate | 2001 |
| Heimdalsgaten 3 AS | Real estate | 2001 |
| Heimdrag AS | Real estate | 2000 |
| Heimebane AS | Professional & scientific | 2024 |
| Heimen LL Husflitsutsal | Wholesale & retail | 1965 |
| Heimer Holding AS | | 2025 |
| Heimfarer AS | Real estate | 2019 |
| Heimferd AS | | 2025 |
| Heimgard Technologies AS | Wholesale & retail | 2003 |
| Heimili Bolig AS | Real estate | 2019 |
| Heimli Holding AS | | 2023 |
| Heimlich AS | Information & communication | 2016 |
| Heimnett AS | Information & communication | 2025 |
| Heimonen Solutions AS | Information & communication | 2026 |
| Heimsilbredden Hytter AS | Real estate | 2016 |
| Heimstaden Bostad Invest 10 AS | Real estate | 2017 |
| Heimstaden Group Norway AS | Administrative & support | 2020 |
| Heimstaden Norway AS | Real estate | 1919 |
| Heimstaden Property 1 AS | Real estate | 2005 |
| Heimstaden Property 2 AS | Real estate | 2014 |
| Heimstaden Property 3 AS | Real estate | 2005 |
| Heimstaden Property 4 AS | Real estate | 2005 |
| Heimstaden Property 5 AS | Real estate | 2010 |
| Heimstaden Services Norway AS | Information & communication | 2022 |
| Heimvang AS | Real estate | 2017 |
| Heimvang Barnehage AS | Education | 2018 |
| Heimvang Eiendom 3 AS | Real estate | 2024 |
| Heimworks AS | Information & communication | 2025 |
| Hein Holding AS | Real estate | 2005 |
| Hein Studios AS | Professional & scientific | 2023 |
| Heine Totland AS | Real estate | 2008 |
| Heinert AS | | 2021 |
| Heinrich Kronbichler Verwaltungs AS | | 2022 |
| Heintz AS | Financial services | 2015 |
| Heinz Jürgen Ridder Elektroinstallation | Construction | 2014 |
| Heinz Will GmbH & Co.Kg | Construction | 2016 |
| Heir Holding AS | | 2017 |
| Heireth AS | Wholesale & retail | 1993 |
| Heirjoer Tann AS | | 2023 |
| Heisan AS | | 2024 |