| Hamarøy Eiendom AS | Real estate | 2021 |
| Hamasa AS | | 2021 |
| Hamberg AS | Information & communication | 2021 |
| Hamborgplassen Barnehage SA | Education | 1988 |
| Hambro AS | Real estate | 2006 |
| Hambro Holding AS | | 2026 |
| Hambro' S Mat AS | Wholesale & retail | 2020 |
| Hamco Invest AS | | 2020 |
| Hamed Mayani Productions AS | Arts & recreation | 2011 |
| Hameki AS | | 2021 |
| Hamernik Holdning AS | | 2024 |
| Hamir AS | Hospitality | 2022 |
| Hamlet AS | Real estate | 2022 |
| Hamlet Coco AS | | 2022 |
| Hamlet Holding AS | Professional & scientific | 2022 |
| Hamlet Montana Research AS | Financial services | 2013 |
| Hammarby Consulting AS | Professional & scientific | 2020 |
| Hammaren Næringspark AS | Real estate | 2002 |
| Hammarstrøm Invest AS | | 2017 |
| Hammer & Hanborg AS | Administrative & support | 2009 |
| Hammer Aeroconsult AS | Professional & scientific | 2025 |
| Hammer Arkitekter Mnal AS | Professional & scientific | 2014 |
| Hammer AS | Transport & logistics | 2012 |
| Hammer Bygg & Graveservice AS | Construction | 2017 |
| Hammer Capital Invest AS | Professional & scientific | 2024 |
| Hammer Eiendomsselskap AS | Real estate | 2003 |
| Hammer Strategi Og Rådgivning AS | Professional & scientific | 2023 |
| Hammerfest Handelseiendom Nord AS | Real estate | 2016 |
| Hammerfest Handelseiendom Syd AS | Real estate | 2006 |
| Hammerfestgata 2 AS | Real estate | 2019 |
| Hammerglass AS | Construction | 2018 |
| Hammerhai I Oslobukta AS | Hospitality | 2021 |
| Hammerhaien AS | | 2023 |
| Hammerhead AS | Financial services | 2015 |
| Hammerhead Holding AS | Professional & scientific | 2011 |
| Hammerichs Holding AS | Real estate | 2024 |
| Hammerinvest Ans | | 2000 |
| Hammermo AS | | 2022 |
| Hammersborg Eiendom AS | | 2025 |
| Hammersborg Inkasso AS | Administrative & support | 2001 |
| Hammersborggata 2 AS | Real estate | 2011 |
| Hammersborggata 9 AS | Real estate | 2011 |
| Hammersborggt 12 AS | Real estate | 2012 |
| Hammerset AS | | 2023 |
| Hammersmoe Holding AS | | 2024 |
| Hammerstad Eiendom AS | Construction | 2017 |
| Hammerstads Gate 5 AS | Real estate | 2003 |
| Hammerstorm Capital AS | Real estate | 2021 |
| Hammerstrøm Bistand Opptreden Og Undervisning AS | Education | 2018 |
| Hammertime Bygg AS | Construction | 2013 |
| Hammertoft AS | Professional & scientific | 2005 |
| Hammervoll Holding AS | Real estate | 2005 |
| Hammock Reklamebyrå AS | Professional & scientific | 2003 |
| Hammond Design AS | Construction | 2016 |
| Hammonia Baltica AS | | 2023 |
| Hammonia Invest AS | | 2017 |
| Hammurabi Bidco AS | | 2025 |
| Hammurabi Topco AS | Real estate | 2025 |
| Hammurabi Topholding AS | | 2025 |
| Hamnes Consulting AS | Real estate | 2011 |
| Hamnes Invest Ltd Nuf | Professional & scientific | 2005 |
| Hamo Bolig AS | | 2018 |
| Hamo Eiendom AS | Real estate | 1946 |
| Hamoca AS | Real estate | 2005 |
| Hamp Invest AS | Real estate | 2004 |
| Hampi AS | Wholesale & retail | 2023 |
| Hampton Industries AS | Real estate | 2013 |
| Hampus Q Holding AS | | 2012 |
| Hamran/Johansen Arkitekter AS | Professional & scientific | 2013 |
| Hamrasletta 10 AS | Real estate | 1980 |
| Hamrasletta 6 AS | Real estate | 2017 |
| Hamre AS | | 2026 |
| Hamre Consult Ans | Professional & scientific | 1983 |
| Hamre Kapital AS | | 2026 |
| Hamre Solutions AS | Professional & scientific | 2024 |
| Hamre-Holding AS | Real estate | 2020 |
| Hamres Interesser AS | Financial services | 2015 |
| Hamse Delivery Limited Nuf | Transport & logistics | 2021 |
| Hamster AS | Information & communication | 2014 |
| Hamster Holding AS | Financial services | 2016 |
| Hamsterhjulet Invest AS | Real estate | 2017 |
| Hamsund Forvaltning AS | Real estate | 2024 |
| Hamtall AS | | 2019 |
| Hamus Invest AS | Real estate | 2006 |
| Hamza Did IT AS | Professional & scientific | 2025 |
| Hamzulls Limited | Construction | 2024 |
| Han Gaiden Da | Arts & recreation | 2018 |
| Han Holding AS | Information & communication | 2024 |
| Han Pølsemannen Da | Wholesale & retail | 2002 |
| Hana Nærsenter AS | Real estate | 2017 |
| Hana Sanz Eiendomsinvest AS | Real estate | 2016 |
| Hananger Holding AS | | 2026 |
| Hance AS | Information & communication | 2021 |
| Hancom Anlegg AS | Construction | 2015 |
| Hancom AS | Construction | 2012 |
| Hancon AS | | 1991 |
| Handal Dørum Invest AS | | 2019 |
| Hande AS | Construction | 2014 |
| Hande Eiendomsutvikling AS | Real estate | 2017 |
| Hande Holding AS | Real estate | 2017 |