| H. Trandal Holding AS | | 2024 |
| H.Aga Holding AS | | 2021 |
| H.Arntzen Holding AS | | 2025 |
| H.G. Thuen A/S | Wholesale & retail | 1988 |
| H.Horn Holding AS | | 2021 |
| H.P. Moe Eiendom AS | Real estate | 1977 |
| H.S. Holding AS | Wholesale & retail | 2016 |
| H2 Byggeteknikk AS | Professional & scientific | 2006 |
| H2 Marine AS | Professional & scientific | 2019 |
| H2SITE Norway AS | Professional & scientific | 2025 |
| H3 Event AS | Administrative & support | 2026 |
| H5 Innovations AS | Professional & scientific | 2005 |
| Ha Bolig AS | Real estate | 2026 |
| Haaberg Invest & Consulting AS | Professional & scientific | 2020 |
| Haabet Holding AS | Transport & logistics | 2005 |
| Haabet Invest AS | Transport & logistics | 2015 |
| Haabet Tankers AS | Transport & logistics | 2010 |
| Haaga Holding AS | Information & communication | 2023 |
| Haakon Knudstad AS | Real estate | 1939 |
| Haaland Fysikalsk Medisin Og Rehabilitering AS | Health & social care | 2023 |
| Haaland Sko Gågaten AS | Wholesale & retail | 2010 |
| Haap Holding AS | Financial services | 2018 |
| Haatuft AS | Professional & scientific | 2015 |
| Haba AS | Financial services | 2005 |
| Habibi Barber Shop AS | Other services | 2025 |
| Habittgruppen AS | Wholesale & retail | 1999 |
| Habo Gastronomi AS | Hospitality | 2001 |
| Hadinvest AS | | 2021 |
| Hagebonden Da | Agriculture & fishing | 2024 |
| Hagen Revisjon AS | Professional & scientific | 2013 |
| Hagerupsvei 24 AS | Real estate | 2026 |
| Hagevik Hageservice AS | Administrative & support | 2025 |
| Hagevik Invest AS | Real estate | 2005 |
| Hagmyr Eiendom Holding AS | Real estate | 2005 |
| HAHO22 AS | Real estate | 2023 |
| HAHO24 AS | Real estate | 2023 |
| Hair Club AS | Other services | 2013 |
| Hair Port AS | Other services | 1994 |
| Hakri Holding AS | Information & communication | 2019 |
| Hal 10 AS | Real estate | 2023 |
| Halfd. Kjerulfsgt 4 AS | Real estate | 2008 |
| Halfdan L Solberg AS | Wholesale & retail | 1924 |
| Halfdan L. Solberg Holding AS | Wholesale & retail | 2019 |
| Halhjem Sentrum AS | Real estate | 2023 |
| Hallaisen AS | Hospitality | 2016 |
| Hallaisiken Music Da | Information & communication | 2020 |
| Hallingskarvet AS | Real estate | 2021 |
| Halsa Invest AS | | 2024 |
| Halsnes Holding AS | | 2024 |
| Halsvik Sound AS | Arts & recreation | 2024 |
| Haltbakk Chartering & Agency AS | Wholesale & retail | 2021 |
| Haltbakk Eiendom AS | Real estate | 2015 |
| Haltbakk Group AS | Administrative & support | 2005 |
| Haltbakk Hitra AS | Wholesale & retail | 2006 |
| Haltbakk Invest AS | Real estate | 2001 |
| Haltbakk Koppang AS | Wholesale & retail | 2014 |
| Haltbakk Megacharge AS | Real estate | 2025 |
| Haltbakk Offshore AS | Transport & logistics | 2019 |
| Haltbakk Skreia AS | Wholesale & retail | 1999 |
| Haltbakk Tankers AS | Transport & logistics | 2017 |
| Haltbakktanktransport AS | Real estate | 2025 |
| Haltenbanken AS | Professional & scientific | 2016 |
| Haltenbanken Bergen AS | Professional & scientific | 2016 |
| Halund AS | Real estate | 2021 |
| Halvard Hagesæther Holding AS | | 2022 |
| Halvtekkja AS | Real estate | 2022 |
| Hamil AS | Real estate | 2011 |
| Hamilton Design AS | Professional & scientific | 2018 |
| Hammersland Revisjon AS | Professional & scientific | 2018 |
| Hamre Og Thowsen Ans | Construction | 1994 |
| Hamre Ventures AS | Real estate | 2025 |
| Hamrehjørnet AS | Real estate | 2010 |
| Hamrevegen 250 AS | Real estate | 2011 |
| Hamris Holding AS | | 2023 |
| Hanackc Holding AS | Arts & recreation | 2019 |
| Hanco Holding AS | Real estate | 2015 |
| Handelens Og Sjøfartens Hus AS | Real estate | 1929 |
| HANDELS203 AS | Wholesale & retail | 1983 |
| Handelsdata AS | Wholesale & retail | 2009 |
| Handelseiendom Vest AS | Real estate | 2008 |
| Handelsinvest AS | Information & communication | 2020 |
| Handelsskolen AS | Education | 2014 |
| Handmade Films in Norwegian Woods AS | Information & communication | 2013 |
| Handsup AS | Arts & recreation | 2019 |
| Handyhelp AS | Information & communication | 2023 |
| Hanestad AS | Professional & scientific | 2018 |
| Hangry Hub AS | Hospitality | 2025 |
| Hanholm Holding AS | | 2005 |
| Hannesdatter Holding AS | | 2025 |
| Hannestad Holding AS | | 2023 |
| Hannevik AS | Financial services | 2005 |
| Hannevik Eiendom AS | Real estate | 1964 |
| Hannevik Logistikk AS | | 1995 |
| Hannis Holding AS | Real estate | 2009 |
| Hans Claussen AS | Wholesale & retail | 1969 |
| Hans Eat AS | Financial services | 2018 |
| Hans H Iversen AS | Wholesale & retail | 2001 |
| Hans H Iversen Eiendom AS | Real estate | 1965 |
| Hans H. Iversen Holding AS | Wholesale & retail | 1998 |
| Hans Hauges Gate 22 AS | Real estate | 2020 |