| Hofseth Development AS | Agriculture & fishing | 2022 |
| Hofseth Holdco AS | | 2019 |
| Hofseth Innovation AS | Administrative & support | 2023 |
| Hofseth International AS | Manufacturing | 2008 |
| Hofseth Logistics AS | Transport & logistics | 2012 |
| Hofseth Processing AS | Manufacturing | 2022 |
| Hofseth Property AS | Real estate | 2004 |
| Hofseth Sales AS | Wholesale & retail | 2020 |
| Hofseth Sea Farming AS | Agriculture & fishing | 2023 |
| Holder AS | Professional & scientific | 2014 |
| Holdim Holding AS | Real estate | 2018 |
| Holding in There AS | | 2021 |
| Hole Kjøtt AS | Manufacturing | 2024 |
| Holen Gruppen AS | Professional & scientific | 2004 |
| Hollingen Eiendom AS | Real estate | 2022 |
| Holm Group AS | Real estate | 2007 |
| Holm Invest AS | Real estate | 1996 |
| Holmem AS | Professional & scientific | 2022 |
| Holmen AS | Real estate | 1976 |
| Holmeset Holding AS | | 2022 |
| Holmeset Invest AS | | 2022 |
| Holmgaarden AS | Real estate | 2013 |
| Holmøy Invest AS | | 2008 |
| Holtanna AS | Financial services | 2015 |
| Holte Consulting Ålesund AS | Professional & scientific | 2022 |
| Holtet Eiendom AS | Real estate | 2003 |
| Holtleite Snekkerservice AS | Construction | 2025 |
| Hoos Invest AS | Financial services | 2016 |
| Hopco AS | | 2023 |
| Hornindal Grøddesvegen 2 AS | Real estate | 2023 |
| Hotel 1904 AS | Hospitality | 2018 |
| Hotel Noreg AS | Hospitality | 2018 |
| Hotel Ålesund AS | Hospitality | 2010 |
| Hotelldrift Ålesund AS | Hospitality | 1995 |
| House of Motion AS | Real estate | 2005 |
| Hovlia AS | Arts & recreation | 2005 |
| Hovlia BK 3 AS | Real estate | 2011 |
| Hovlia BK 5 AS | Real estate | 2011 |
| Howden Invest AS | Real estate | 2006 |
| HP Brandal Holding AS | | 2026 |
| HPD Eiendom AS | Real estate | 2017 |
| HPD Invest AS | Wholesale & retail | 2005 |
| HPG Invest AS | | 2019 |
| HPK Holding AS | Financial services | 2005 |
| HPT Eiendom AS | Real estate | 2005 |
| HPT Trading AS | Wholesale & retail | 2009 |
| HQS AS | Information & communication | 2022 |
| HSV Holding AS | Manufacturing | 2014 |
| HTM Moa AS | Real estate | 2011 |
| HTR Invest AS | Real estate | 2013 |
| Hua Hin Thai Spa AS | Other services | 2019 |
| Hubro Technologies AS | Professional & scientific | 2024 |
| Hufa Eiendom AS | Manufacturing | 2008 |
| Hufa Luefabrikk AS | Manufacturing | 1918 |
| Hug Betong AS | Construction | 2018 |
| Hug Entreprenør AS | Construction | 2024 |
| Hugnad AS | Professional & scientific | 2007 |
| Huldrekoppen AS | Wholesale & retail | 2024 |
| Human Kapital Vekst AS | Administrative & support | 2014 |
| Humlen Eiendom AS | Real estate | 2005 |
| Humlen Invest AS | Wholesale & retail | 2005 |
| Hundsværgata 6 AS | Real estate | 1996 |
| Hunter Hub AS | Professional & scientific | 2025 |
| Hunter Visuals AS | Professional & scientific | 2025 |
| Hurlen Invest AS | Water & waste | 2005 |
| Hus AS | Real estate | 1988 |
| Husby Kafe Og Catering AS | Hospitality | 2019 |
| Husfliden Ålesund AS | Manufacturing | 1987 |
| Husfoto Agency Norway AS | Information & communication | 2022 |
| Hushavnen AS | Real estate | 2024 |
| Hveding Invest AS | Financial services | 2014 |
| Hybo AS | Real estate | 2018 |
| Hydra Holding AS | | 2026 |
| Hydra Pipe Vest AS | Wholesale & retail | 2018 |
| Hyrjon AS | Real estate | 2013 |
| Hyt Bjorligard AS | Real estate | 2023 |
| Håberg AS | Wholesale & retail | 2007 |
| Håheim Byggdesign AS | Professional & scientific | 2021 |
| Hårstrået Dame Og Herrefrisør AS | Other services | 2004 |
| Høgnabben AS | Financial services | 2005 |
| Høgvollen Holding AS | Real estate | 2024 |
| Høyanger Eiendom AS | Real estate | 2021 |
| Høyenhall Invest AS | Professional & scientific | 2001 |
| I & R Eiendom AS | Real estate | 2012 |
| I Aasen Eiendom AS | Real estate | 1999 |
| I E M AS | | 2024 |
| I E Wartdal AS | | 2005 |
| I M Consulting AS | | 2022 |
| I Tide Revisjon AS | Professional & scientific | 2018 |
| I.M.Røren Invest AS | Financial services | 2017 |
| Ibd Holding AS | Financial services | 2016 |
| Ichiban Invest AS | | 2018 |
| Ida West AS | Wholesale & retail | 2014 |
| Iddy AS | Financial services | 2022 |
| Idèc (Idè Consulting) AS | Education | 2012 |
| Idé Bygg Prosjekt AS | Construction | 2008 |
| Idéhus Ålesund AS | Construction | 2007 |
| Ieb Invest AS | Professional & scientific | 2020 |
| Iem AS | Information & communication | 2020 |
| Igesund Holding AS | Real estate | 2020 |