| Hanto Holding AS | | 2025 |
| Hap Invest AS | Real estate | 2021 |
| Happy Hebbi Holding AS | | 2022 |
| Hard Rocx AS | Wholesale & retail | 2020 |
| Harding Holding AS | Health & social care | 2022 |
| Hardrocker Holding AS | | 2022 |
| Harling Holding AS | | 2024 |
| Hartmann Arkitekter AS | Professional & scientific | 2004 |
| Hasse Pop AS | Professional & scientific | 2022 |
| Hasselcorp AS | Information & communication | 2021 |
| Hatojoma AS | Financial services | 2024 |
| Haugbobekken AS | Financial services | 2012 |
| Haugehåtveit Consulting AS | Information & communication | 2020 |
| Haugerud Hage AS | Agriculture & fishing | 2021 |
| Haukaas Omberg Holding AS | Financial services | 2022 |
| Haukeliskogen Oddevald Da | Agriculture & fishing | 2011 |
| Havbris Invest AS | | 2021 |
| Haveli Kaffebar Ans | Hospitality | 2000 |
| Haven Technologies AS | Information & communication | 2026 |
| Havfisken Utvikling AS | Professional & scientific | 2025 |
| Havnås AS | Real estate | 2010 |
| Havåntek AS | Professional & scientific | 2021 |
| Hawkfish AS | Information & communication | 2018 |
| Hawsul Holding AS | | 2026 |
| HC Birkedal Invest AS | Financial services | 2014 |
| HC Lunder Invest AS | | 2024 |
| Heartbiz AS | Professional & scientific | 2023 |
| Hebo-Invest AS | Financial services | 2017 |
| Heggelien Holding AS | | 2019 |
| Heggelund Enterprises AS | Real estate | 2020 |
| Heggeodden Næring I AS | Real estate | 2012 |
| Heimo AS | Professional & scientific | 2008 |
| Heineberg Rør AS | Construction | 2018 |
| Heistornet AS | Transport & logistics | 1981 |
| Hele Facility AS | Real estate | 2024 |
| Heleide AS | | 2026 |
| Helgero AS | Real estate | 2005 |
| Helland IT & Invest AS | | 2022 |
| Helpadvisor AS | Information & communication | 2016 |
| Helse I Alle Ledd AS | Health & social care | 2008 |
| Helsekonsulentene AS | Health & social care | 2026 |
| Hemy AS | Information & communication | 2015 |
| Heni Invest AS | Real estate | 2006 |
| Henico AS | Real estate | 2006 |
| Henie AS | Wholesale & retail | 2007 |
| Henrik Horgen Film AS | Information & communication | 2018 |
| Henriksen Rør AS | Construction | 2023 |
| Heo Holding AS | Professional & scientific | 2018 |
| Hepa Invest AS | Real estate | 2020 |
| Hermes Group AS | Professional & scientific | 2017 |
| Herosa AS | Arts & recreation | 2015 |
| Herrenknecht (Australia) Pty Limited | Construction | 2016 |
| Herro Holding AS | | 2023 |
| Hess Invest AS | | 2021 |
| Hest Er Best Invest AS | | 2020 |
| Heti Holding AS | Real estate | 2009 |
| Hewvo Technology Services AS | Professional & scientific | 2026 |
| Heycirc AS | Information & communication | 2025 |
| HG Aaserud AS | Health & social care | 2019 |
| HH Global Norway AS | Professional & scientific | 2023 |
| High-Tech Design AS | Professional & scientific | 2006 |
| Hilde Hummelvoll AS | Arts & recreation | 2023 |
| Himle Consulting AS | Information & communication | 2008 |
| Hindrum AS | Financial services | 2005 |
| Hisab Joker Company AB Nuf | Wholesale & retail | 2001 |
| Historia F AS | Professional & scientific | 2013 |
| Historia G AS | Wholesale & retail | 2014 |
| Hitekcleaner AS | Wholesale & retail | 2025 |
| Hits Invest AS | Real estate | 2020 |
| Hjelpelighteren Da | Wholesale & retail | 1987 |
| Hjortdahl Holding AS | Financial services | 2008 |
| Hkle AS | | 2023 |
| HM Holdning AS | Professional & scientific | 2005 |
| Hobby Farm Holding AS | | 2021 |
| Hodl Holding AS | | 2021 |
| Hodlestad AS | | 2020 |
| Hogstad Invest AS | Agriculture & fishing | 1993 |
| Hogstadveien Va SA | Construction | 2017 |
| Hold Deg Fast AS | | 2024 |
| Holden Haugbotn AS | | 2026 |
| Holmboe Interiors AS | Professional & scientific | 2025 |
| Holstein AS | Financial services | 1990 |
| Holtsmark Drift AS | Hospitality | 2023 |
| Homeimprovement AS | Real estate | 2020 |
| Honeywell | Wholesale & retail | 2002 |
| Honeywell AS | Manufacturing | 1972 |
| Honeywell Automation India Ltd (Pune in) | Administrative & support | 2003 |
| Honeywell Control Systems Ltd | Wholesale & retail | 2000 |
| Honeywell Life Safety AS | Wholesale & retail | 1999 |
| Honeywell Romania S.R.L. (Bucharest Ro) | Professional & scientific | 2014 |
| Hooks Belysnings AB | Manufacturing | 1995 |
| Horeca Consulting AS | Professional & scientific | 2024 |
| Horeca Invest AS | Professional & scientific | 2024 |
| Horne Skog Da | Agriculture & fishing | 1974 |
| House of Balance Lifestyle AS | Professional & scientific | 2021 |
| House of Goods AS | Wholesale & retail | 2012 |
| House of Knowledge AS | Professional & scientific | 2015 |
| Hovda Eiendom AS | Real estate | 2024 |
| Hovda Invest AS | Real estate | 2019 |
| Hovhelseteamet AS | Agriculture & fishing | 2019 |