| Hans Nielsen Hauges Vei 49 AS | Real estate | 2011 |
| Hansemann Holding AS | | 2023 |
| Hansen Drift Og Vedlikehold AS | Construction | 2022 |
| Hansen Protection AS | Manufacturing | 1994 |
| Hapa Consult AS | Professional & scientific | 2012 |
| Hareide Design AS | Professional & scientific | 1999 |
| Hassan Taxi AS | Transport & logistics | 2026 |
| Hatlen Holding AS | | 2015 |
| Haugen Isolering AS | Construction | 2017 |
| Hausmann Holding AS | | 2020 |
| Havmun Holding AS | | 2024 |
| Havnefruen AS | Agriculture & fishing | 2017 |
| Havnekalesje AS | Manufacturing | 2021 |
| Havnelageret Moss AS | Hospitality | 2024 |
| Havsalt Invest AS | Administrative & support | 2011 |
| Havstu AS | Real estate | 2026 |
| HCH Utvikling AS | Real estate | 1978 |
| Hcsl Holding AS | | 2022 |
| Heartland Adventure AS | Administrative & support | 2023 |
| Hee Holding AS | | 2005 |
| Hegle AS | Transport & logistics | 2017 |
| Hegstad Holding AS | Real estate | 2011 |
| Heidelberg Materials Prefab Norge AS | Manufacturing | 1994 |
| Heike Holding AS | Real estate | 2017 |
| Heike Vask & Vedlikehold AS | Administrative & support | 2012 |
| Heimdalloutdoor by Rudi Andresen Heimdahl Limited Nuf | Wholesale & retail | 2025 |
| Heki Holding AS | Real estate | 2005 |
| Heklemote AS | Wholesale & retail | 2023 |
| Helene Askar AS | Professional & scientific | 2026 |
| Helgerødgata 36 Moss AS | Real estate | 2019 |
| Hellerud Consult AS | Health & social care | 2024 |
| Hellesnes Holding AS | Information & communication | 2023 |
| Hello Business Da | Arts & recreation | 2022 |
| Hello Popcorn AS | Professional & scientific | 2025 |
| Hellofresh Norway AS | Wholesale & retail | 2020 |
| Helsan AS | Health & social care | 2022 |
| Helsehuset Moss AS | Real estate | 2019 |
| Hemamola Holding AS | | 2022 |
| Henha Invest AS | Financial services | 2006 |
| Henning Og Arilds Import Da | Wholesale & retail | 1998 |
| Henæs Invest AS | | 2019 |
| Herje Strømme Holding AS | | 2026 |
| Herto Holding AS | Real estate | 2017 |
| Hertzberg Invest AS | Financial services | 2005 |
| Hestehaugane Invest AS | | 2024 |
| HGG8 AS | Real estate | 2012 |
| HGG8 Holding AS | Real estate | 2020 |
| Hildraskar AS | Financial services | 2007 |
| Him Data AS | Wholesale & retail | 2005 |
| Hindova AS | Hospitality | 2024 |
| Hint Eiendom AS | Real estate | 2005 |
| Hint Holding AS | Real estate | 2005 |
| Hjelseth Eiendom Og Invest AS | Real estate | 2018 |
| Hjemren AS | Administrative & support | 2026 |
| HL1 Norge AS | Construction | 2020 |
| HM Investments AS | Professional & scientific | 2016 |
| HMG Totalbygg AS | Construction | 1987 |
| HMH Cement Moss AS | Wholesale & retail | 2024 |
| HMR Eiendom AS | Financial services | 2023 |
| HMS Proffgulv Wille Berntsen Da | Construction | 2000 |
| HMV Holding AS | | 2018 |
| HNH Garasjelag SA | Real estate | 1997 |
| Hob Holding AS | Real estate | 1992 |
| Hobbymakeren AS | Wholesale & retail | 2012 |
| Hobølveien 624 AS | Real estate | 2022 |
| Holder Consulting AS | Professional & scientific | 2021 |
| Holdingtanken AS | | 2026 |
| Holdyen AS | | 2023 |
| Holmara Holding AS | | 2024 |
| Holmgren Transport AS | Transport & logistics | 2008 |
| Holmgård Holding AS | Real estate | 2005 |
| Holron Invest AS | | 2025 |
| Holtebu Holding AS | Hospitality | 2016 |
| Holtebu Investments AS | Real estate | 2020 |
| Horeca Consulting & Management AS | Real estate | 2005 |
| Horeca Service AS | Manufacturing | 2017 |
| Hotell Refsnes Gods AS | Hospitality | 1998 |
| Hoti Stasjonsdrift AS | Wholesale & retail | 2026 |
| House of Architecture & Design AS | Professional & scientific | 2012 |
| Hovden Aktiva AS | Real estate | 2007 |
| HP Invest Og Utleie AS | Administrative & support | 2026 |
| Hpa AS | Information & communication | 2012 |
| HRH AS | Wholesale & retail | 2016 |
| HS Import AS | Administrative & support | 2006 |
| HSK Eiendomsdrift AS | Real estate | 1988 |
| HSL Nguyen AS | Transport & logistics | 2023 |
| Hso Grindøy AS | Professional & scientific | 2018 |
| Hubexo Norway AS | Information & communication | 1988 |
| Hudlegeklinikken Sohrabi AS | Health & social care | 1999 |
| Hugget AS | Manufacturing | 2025 |
| Hukeberg Holding AS | | 2025 |
| Human Factors Solutions AS | Professional & scientific | 2010 |
| Hunt & Eeg AS | Arts & recreation | 2014 |
| Hunters AS | Professional & scientific | 2000 |
| Hus & Hage Kompaniet AS | Administrative & support | 2024 |
| Husaklinikken AS | Education | 2017 |
| Husmannen AS | Construction | 2018 |
| Husqvarna Commercial Solutions Norge AS | Financial services | 2020 |
| Husqvarna Norge AS | Manufacturing | 1971 |
| Hverdagsbarn AS | Health & social care | 2026 |