| Haukis AS | | 2022 |
| Haukland Ventures AS | | 2025 |
| Hauksikt AS | | 2016 |
| Haukås Drift AS | Real estate | 2018 |
| Haukås Eiendomsinvest AS | Real estate | 2016 |
| Haukøy AS | Financial services | 2017 |
| Haukøya Holding AS | | 2020 |
| Haumea Invest AS | | 2020 |
| Haunco AS | | 2019 |
| Haunted House Ans | Manufacturing | 1990 |
| Haus Utvikling AS | Real estate | 1988 |
| Hausmania SA | Real estate | 2001 |
| Hausmann Gruppen AS | Other services | 2015 |
| Hausmann Reklamebyrå AS | Professional & scientific | 2023 |
| Hausmanns Auto AS | Wholesale & retail | 2011 |
| Hausmanns Gate 16 AS | Real estate | 1999 |
| Hausmannsgate 19 AS | Real estate | 2005 |
| Hausmannsgate 21 AS | Real estate | 2008 |
| Hausmannsgate 28 AS | Real estate | 2016 |
| Hausmannsgate 29 AS | Real estate | 2004 |
| Hausmannsgate 40 AS | Real estate | 2019 |
| Hausmannsgate 6 AS | Real estate | 2016 |
| Hausmannsgate Utvikling AS | Real estate | 1998 |
| Hausmannskvartalet Eiendom AS | Real estate | 2004 |
| Haust AS | Real estate | 2015 |
| Hausting Equity Partners AS | | 2008 |
| Haut Brion AS | Real estate | 2005 |
| Haut De Gamme AS | Wholesale & retail | 2022 |
| Hav Bulk AS | Transport & logistics | 1999 |
| Hav Chartering AS | Transport & logistics | 2002 |
| Hav Eiendom AS | Real estate | 2003 |
| Hav Filipstad AS | | 2024 |
| Hav Hydraulikk AS | Wholesale & retail | 2026 |
| Hav Invest AS | Real estate | 1998 |
| Hav Kattegat AS | Transport & logistics | 2014 |
| Hav Ship Management AS | Transport & logistics | 2013 |
| Hav Shipping AS | Transport & logistics | 2002 |
| Hava Eiendomsselskap 2 AS | Real estate | 2023 |
| Hava Energy AS | Professional & scientific | 2007 |
| Hava Financials AS | Real estate | 2012 |
| Hava Holding AS | Information & communication | 2007 |
| Hava Kompetanse AS | Health & social care | 2021 |
| Hava Media AS | Information & communication | 2007 |
| Hava Omsorg AS | Health & social care | 2019 |
| Hava Properties AS | Real estate | 2019 |
| Hava Velferd AS | Health & social care | 2023 |
| Hava Venture AS | Information & communication | 2012 |
| Hava-Instituttet Holding AS | Health & social care | 2019 |
| Havana AS | Hospitality | 2021 |
| Havana Club AS | Hospitality | 2003 |
| Havana Taxi AS | Transport & logistics | 2025 |
| Havanti AS | Financial services | 1998 |
| Havaristen AS | Wholesale & retail | 2012 |
| Havas AS | Real estate | 2012 |
| Havblikk AS | Real estate | 1993 |
| Havblikk Holding AS | | 2025 |
| Havcollen AS | Real estate | 2011 |
| Havegaten 46 AS | Households | 1914 |
| Havegaten Eiendom AS | Real estate | 2015 |
| Havek Eiendom Da | Real estate | 2001 |
| Haveli Tandoori AS | Hospitality | 2013 |
| Havelle AS | Manufacturing | 2026 |
| Havemann Holding AS | | 2024 |
| Havemann Plastikkirurgi AS | Health & social care | 2025 |
| Haven Consulting Nuf | Information & communication | 2008 |
| Haveng AS | Professional & scientific | 2021 |
| Haver Wallin AS | Wholesale & retail | 2024 |
| Haver Wallin Group AS | | 2026 |
| Havermans Holding AS | | 2023 |
| Haverstad AS | Real estate | 2015 |
| Haverstad Bygg AS | Real estate | 2017 |
| Haverstad Eiendomsforvaltning AS | Real estate | 2017 |
| Haverstad Utvikling AS | Real estate | 2021 |
| Haverstad-Eiendom AS | Real estate | 2017 |
| Havets Stierne AS | Real estate | 2011 |
| Havferd AS | Arts & recreation | 2012 |
| Havfonn AS | Real estate | 2006 |
| Havfonn Holding AS | | 2025 |
| Havfonn Kapitalforvaltning AS | | 2024 |
| Havfram Fleet Management AS | Transport & logistics | 2023 |
| Havfruen Renhold AS | Administrative & support | 2005 |
| Havgatt AS | | 2019 |
| Havgløtt Eiendom AS | Real estate | 1962 |
| Havgul Nordic AS | Professional & scientific | 2015 |
| Havgutt Invest AS | Professional & scientific | 2000 |
| Havgård AS | Real estate | 2013 |
| Havian AS | Financial services | 2019 |
| Havig Invest AS | Professional & scientific | 2023 |
| Havik AS | | 2023 |
| Havikbotn Invest AS | | 2026 |
| Havind AS | Professional & scientific | 2020 |
| Havinvest AS | Transport & logistics | 1996 |
| Havkonsult AS | Professional & scientific | 2016 |
| Havland Group AS | Information & communication | 2019 |
| Havn Forvaltning AS | | 2026 |
| Havna Tjøme AS | Real estate | 2006 |
| Havna Ukesandeler AS | | 2024 |
| Havnabakken 25 AS | Real estate | 1987 |
| Havnabakken Barnehage SA | Education | 1991 |
| Havnegata 10 AS | Real estate | 2005 |