| Hairstation Drift AS | Other services | 2023 |
| Hairtekt AS | Education | 2020 |
| Haitech AS | Information & communication | 2020 |
| Haitech Consulting AS | Information & communication | 2020 |
| Haitek AS | Information & communication | 2024 |
| Haitek Invest AS | | 2026 |
| Haitoukin AS | Real estate | 2005 |
| Haitoukin Invest AS | Real estate | 2015 |
| Haive AS | Information & communication | 2015 |
| Haj Risk Investments AS | | 2024 |
| Hajanirina 2 AS | | 2022 |
| Hajanirina AS | | 2018 |
| Hajar Frukt Og Grønt Da | Wholesale & retail | 2005 |
| Hajar Transport & Logistikk AS | Transport & logistics | 2025 |
| Haji AS | Real estate | 2021 |
| Hajoka AS | Financial services | 2008 |
| Hak AS | Real estate | 2025 |
| Hakadal Næringseiendom AS | Real estate | 2016 |
| Hakadal Regnskapsbyrå AS | Professional & scientific | 2022 |
| Hakanen Holding AS | | 2025 |
| Hakat Holding AS | Real estate | 2022 |
| Hakavik Capital AS | | 2025 |
| Hakavik Holding AS | | 2025 |
| Hakavik Industries AS | | 2025 |
| Hakestad Holding AS | Professional & scientific | 2021 |
| Haki Solutions AS | Information & communication | 2025 |
| Hakimnejad Holding AS | | 2023 |
| Hakk Invest AS | Real estate | 2005 |
| Hakke Invest AS | Real estate | 2005 |
| Hakkebakkeskogen Biskop Heuchsvei AS | Education | 2022 |
| Hakkebakkeskogen Daniel Walstadsvei AS | Education | 2022 |
| Hakkebakkeskogen DR Rustadsvei AS | Education | 2022 |
| Hakkebakkeskogen Fyrstikkbakken AS | Education | 2022 |
| Hakkebakkeskogen Kastanjeveien AS | Education | 2022 |
| Hakkebakkeskogen Kirkesvingen AS | Education | 2022 |
| Hakkebakkeskogen Kolderupsvei AS | Education | 2022 |
| Hakkebakkeskogen Tåsenveien AS | Education | 2022 |
| Hakkebakkeskogen Ullernveien AS | Education | 2022 |
| Hakkebakkeskogen Vækerøveien AS | Education | 2022 |
| Hakkespetten Barnehage AS | Education | 2022 |
| Hakketi AS | Professional & scientific | 1986 |
| Haklomana AS | | 2025 |
| Hako Capital AS | Financial services | 2017 |
| Hako Elektro AS | Construction | 1992 |
| Hakone AS | Hospitality | 2023 |
| Hakone Holding AS | | 2025 |
| Hakonor AS | Wholesale & retail | 2023 |
| Hakosuka AS | Wholesale & retail | 2025 |
| Hakott Invest AS | | 2026 |
| Hakuna Matata Etiopisk Resturant AS | Hospitality | 2018 |
| Hakuna Matata Holding AS | | 2022 |
| Hakuna Matata Restaurant AS | Wholesale & retail | 2024 |
| Hakwood Norge AS | Construction | 2011 |
| Hakø Holding AS | Real estate | 2011 |
| Hakø Invest AS | Professional & scientific | 2014 |
| Hal 9000 AS | | 2026 |
| Hal Arkitekter AS | Professional & scientific | 2007 |
| Hal AS | | 2017 |
| Hal Eiendom AS | Real estate | 2014 |
| Hal Nail Academy AS | Other services | 2023 |
| Hala Orient Star Trading AS | Wholesale & retail | 2024 |
| Halabi Norge AS | Wholesale & retail | 2022 |
| Halber Mensch AS | Other services | 2014 |
| Halcyon Holding AS | Real estate | 2015 |
| Halcón AS | | 2023 |
| Halda AS | Professional & scientific | 2023 |
| Halda Invest AS | Professional & scientific | 2021 |
| Haldeda AS | Hospitality | 2024 |
| Halden Butikkeiendom AS | Real estate | 2004 |
| Haldenv. 641 AS | Real estate | 2011 |
| Haldis Engebrigtsen & Co Ans | Wholesale & retail | 1981 |
| Haldis Salongen AS | Other services | 2000 |
| Haldorsen Grønås AS | | 2026 |
| Halex Eiendom AS | Real estate | 2000 |
| Half Invest AS | | 2016 |
| Half'N Half Ans | Wholesale & retail | 1994 |
| Halfdan AS | Real estate | 1973 |
| Halfdan Holme AS | Real estate | 1920 |
| Halfdan Invest III AS | Financial services | 2009 |
| Halfrid Gruppen AS | Professional & scientific | 2019 |
| Halfspring AS | Professional & scientific | 2018 |
| Halfstone AS | | 2022 |
| Halibut Holding AS | | 2025 |
| Halifax Mc&E AS | Financial services | 2022 |
| Halimi Eiendom AS | Real estate | 2014 |
| Halimi Holding AS | Construction | 2012 |
| Halimo Fashion Da | Wholesale & retail | 2023 |
| Halinus AS | Real estate | 2006 |
| Halitil AS | Real estate | 2013 |
| Halk AS | Professional & scientific | 2020 |
| Halla Invest AS | Real estate | 2006 |
| Halladu AS | Wholesale & retail | 2024 |
| Hallagerstua Barnehage SA | Education | 1995 |
| Hallaien AS | | 2019 |
| Hallan Holding AS | Financial services | 2016 |
| Halland Design AS | Professional & scientific | 2022 |
| Halland Gruppen AS | Professional & scientific | 2023 |
| Hallar AS | Professional & scientific | 1981 |
| Hallberg Bach Eiendom AS | Real estate | 2024 |
| Hallbjørn Hareide Invest AS | Real estate | 1998 |