| Hbr-Collective Da | Wholesale & retail | 2025 |
| HC Telefon & Sekretærtjeneste Da | Administrative & support | 1999 |
| HC Totalsikring Ans | Wholesale & retail | 1999 |
| HD Fundamentering AS | Construction | 2022 |
| Hdig AS | | 2023 |
| HDV Holding AS | | 2026 |
| Headbrands Norge AS | Wholesale & retail | 2015 |
| Headlights AS | Information & communication | 2025 |
| Heads Up Hårstudio AS | Other services | 2014 |
| Headshed AS | Information & communication | 2013 |
| Headspin AS | Professional & scientific | 2014 |
| Healheim AS | Education | 2025 |
| Healthy Choices Da | Arts & recreation | 2025 |
| Heat Arkitekter AS | Professional & scientific | 2012 |
| Heat Holding AS | Real estate | 2021 |
| Heavelock Solutions AS | Information & communication | 2019 |
| Hebe AS | | 2018 |
| Hebo Industrier AS | | 2020 |
| Hector TRD AS | Hospitality | 2014 |
| Hedonium AS | Real estate | 2017 |
| Hedonium Tech AS | Arts & recreation | 2019 |
| Hedso Holding AS | | 2022 |
| Heem Invest AS | Financial services | 2013 |
| Hege Børresen Holding AS | | 2019 |
| Hege Solberg Jacobsen Psykomotorisk Fysioterapi AS | Health & social care | 2017 |
| Heggenhougen Holding AS | Financial services | 2005 |
| Heggset Invest AS | | 2020 |
| Heggstadmoen 12 AS | Real estate | 2009 |
| Heggstadmoen 14-16 AS | Real estate | 2009 |
| Heggstadmoen 18 AS | Real estate | 2009 |
| Heggstadmoen 47 AS | Real estate | 2021 |
| Heggstadmoen 5 AS | Real estate | 2009 |
| Heggstadmoen 51 AS | Real estate | 2009 |
| Heggstadmoen 53 AS | Real estate | 2009 |
| Heggstadmoen 55 AS | Real estate | 2009 |
| Heggstadmyra 15-17 AS | Real estate | 2024 |
| Heggstadmyra AS | Real estate | 2011 |
| Heggvoll Holding AS | | 2021 |
| Heglund Holding AS | Real estate | 1987 |
| Heglund Invest AS | Real estate | 2005 |
| Hegren AS | Professional & scientific | 2025 |
| Hegstad Skilt & Reklame AS | Construction | 1998 |
| Hei Holding AS | | 2023 |
| Hei Studio & Forlag AS | Information & communication | 2025 |
| Heiavegen 557 AS | Real estate | 2022 |
| Heidi Strøm AS | Financial services | 2005 |
| Heidihs Holding AS | | 2025 |
| Heiki Holding AS | Wholesale & retail | 2006 |
| Heim Eiendom AS | Real estate | 2018 |
| Heim Eiendom Holding AS | Real estate | 2018 |
| Heimdal Autoriserte Trafikkskole AS | Education | 1978 |
| Heimdal IT AS | Information & communication | 2025 |
| Heimdal Logistikk Invest AS | Real estate | 2019 |
| Heimdal Sentrum AS | Real estate | 2014 |
| Heimdal Sentrum Utvikling AS | Real estate | 2019 |
| Heimdal Syd AS | Real estate | 2020 |
| Heimdal Ur Og Gull AS | Wholesale & retail | 2017 |
| Heine Holding AS | Education | 2024 |
| Heineman Holding AS | | 2025 |
| Heinsa Holding AS | Manufacturing | 1973 |
| Hek AS | Hospitality | 2025 |
| Hekkli Holding AS | | 2026 |
| Heko AS | Real estate | 2019 |
| Hekuba Invest AS | | 2010 |
| Hela Holding AS | | 2025 |
| Helbygg AS | Construction | 2018 |
| Helen Systue AS | Manufacturing | 2011 |
| Helende Kreativitet AS | Education | 2025 |
| Helgemo Rørteknikk AS | Construction | 1997 |
| Helgesen Consulting AS | Professional & scientific | 2017 |
| Helgesen Og Thommesen AS | Real estate | 2001 |
| Helgesen Ur Og Gull AS | Wholesale & retail | 2004 |
| Helha AS | | 2021 |
| Heli Print AS | Manufacturing | 2023 |
| Helia Tech AS | Information & communication | 2026 |
| Helift AS | | 2022 |
| Helios Vision AS | | 2021 |
| Hell Hotel AS | Real estate | 1996 |
| Hellan Rådgivning AS | Education | 2023 |
| Helland Media AS | Information & communication | 2018 |
| Helliksen Holding AS | Real estate | 2005 |
| Helly Beauty AS | Other services | 2024 |
| Helmaks AS | Real estate | 2006 |
| Helmer Lundgreens Gate 2 AS | Real estate | 2016 |
| Helmet AS | Information & communication | 2011 |
| Helsec AS | Information & communication | 2025 |
| Helsedrift AS | Wholesale & retail | 2021 |
| Helseklinikken AS | Health & social care | 2024 |
| Helsekosten Torget AS | Wholesale & retail | 2005 |
| Helseplattformen AS | Public administration | 2019 |
| Helserespons AS | Information & communication | 2021 |
| Helseth Kunst & Kvalitet AS | Professional & scientific | 2017 |
| Helsfyr Atrium AS | Real estate | 1993 |
| Helstokk AS | | 2025 |
| Helt A.Lein AS | | 2026 |
| Helt BN Holding AS | | 2025 |
| Helt H Holding AS | | 2026 |
| Helton Invest AS | | 2025 |
| Hemsedal Alpin Hotell AS | Hospitality | 2003 |
| Hemsing Takst Og Byggkontroll AS | Professional & scientific | 2018 |