| HK Invest Group AS | | 2026 |
| HK Link AS | Professional & scientific | 2009 |
| HK Reklamebyrå AS | Professional & scientific | 2003 |
| HK Rørservice AS | Construction | 2011 |
| HK Vii Utvikling AS | Real estate | 2020 |
| Hkindem Holding AS | | 2022 |
| HKK Holding AS | Real estate | 2024 |
| HKS Bolig AS | Construction | 2009 |
| HLT Holding AS | Real estate | 2019 |
| HMG9 Utvikling AS | Professional & scientific | 2021 |
| HMH Invest AS | Financial services | 2005 |
| HMJ Finance AS | | 2020 |
| Hmsin AS | | 2005 |
| Hnml Forvaltning AS | | 2026 |
| HNW Holding AS | | 2022 |
| Ho-Gi Invest AS | Information & communication | 2023 |
| Hobe AS | Professional & scientific | 2025 |
| Hodebry AS | Health & social care | 2023 |
| Hodl Invest AS | | 2022 |
| Hoeggen Eiendom AS | Real estate | 1997 |
| Hoeggen Eiendom Og Entreprenør AS | Construction | 2000 |
| Hoff Capital AS | | 2022 |
| Hoff Carl Johan Ans | | 1992 |
| Hoff Handel AS | Real estate | 2007 |
| Hoff Holding AS | | 1993 |
| Hoff Hotels AS | Hospitality | 2014 |
| Hoff Media AS | Professional & scientific | 2025 |
| Hoffcon International AS | Information & communication | 1992 |
| Hoffi Holding AS | Wholesale & retail | 2023 |
| Hoffinvest AS | Real estate | 2022 |
| Hoffinvest Holding AS | | 2023 |
| Hofstad Holding AS | Wholesale & retail | 2014 |
| Hofstad Invest AS | Real estate | 2013 |
| Hofstad Næring 9 AS | Real estate | 2018 |
| Hofstadvegen 64 AS | Manufacturing | 2005 |
| Hofstadvegen 64 Invest AS | Real estate | 2025 |
| Hogst AS | Health & social care | 2016 |
| Hok Holding AS | | 2020 |
| Hoka Invest AS | Transport & logistics | 2018 |
| Hokstad Lakkservice AS | Other services | 2013 |
| Hokus Pokus AS | Wholesale & retail | 1989 |
| Hola AS | | 2018 |
| Holan Holding AS | Real estate | 2019 |
| Hold Holding Held AS | | 2023 |
| Hold IT AS | Professional & scientific | 2005 |
| Hold Sjarken AS | | 2025 |
| Holden Design AS | Professional & scientific | 2025 |
| Holden Gård AS | Agriculture & fishing | 2011 |
| Holden Holdning AS | | 2025 |
| Holding CLV 14 AS | Real estate | 2025 |
| Holding on for Dear Life AS | | 2023 |
| HOLDING1 AS | Wholesale & retail | 2021 |
| Holdingselskapet Mitt AS | | 2026 |
| Holhjem Holding AS | Real estate | 2019 |
| Holistisk Helse Ingrid AS | Education | 2023 |
| Holla Autosenter AS | Wholesale & retail | 2024 |
| Holm Byggservice AS | Construction | 2019 |
| Holm Eiendomservice AS | Real estate | 2021 |
| Holm Helse AS | Health & social care | 2022 |
| Holm Invest Holding AS | Construction | 2019 |
| Holmen/Hjertaas AS | Arts & recreation | 2017 |
| Holmetjern Boliginvest AS | | 2018 |
| Holmetjern Invest AS | Real estate | 2013 |
| Holmetjernskogen AS | Agriculture & fishing | 2019 |
| Holmis AS | Real estate | 2017 |
| Holmli Holding AS | | 2022 |
| Holmstar AS | Real estate | 2014 |
| Holstveita Matbutikk Ans | Wholesale & retail | 1999 |
| Holtbråtveien Invest AS | Real estate | 2026 |
| Holten Eiendom AS | Financial services | 2005 |
| Holtermanns Veg 1-13 AS | Real estate | 2010 |
| Holtermanns Veg 29 AS | Real estate | 2014 |
| Holtermanns Veg 41 AS | Real estate | 2024 |
| Holtermanns Veg 70 AS | Real estate | 2007 |
| Holtermanns Veg Utvikling 2 AS | Real estate | 2023 |
| Holtermannsvei 2 AS | Professional & scientific | 2005 |
| Holtermannsvei 2 Invest AS | Real estate | 2019 |
| Holtermannsveien 31 AS | Real estate | 2016 |
| Holtermannsveien 31A AS | Construction | 2023 |
| Holtermannsveien 33 AS | Real estate | 2020 |
| Holtermannsveien 45 AS | Real estate | 2008 |
| Holtermannsveien AS | Real estate | 2012 |
| Holtskogen 22 Og 24 AS | Real estate | 2020 |
| Holtskogen N1A AS | Real estate | 2015 |
| Holtskogen N1G AS | Real estate | 2015 |
| Holtskogen N2B AS | Professional & scientific | 2015 |
| Holtskogen N2C AS | Real estate | 2015 |
| Holtskogen N3 AS | Real estate | 2015 |
| Holtskogen N4A AS | Real estate | 2015 |
| Holtskogen N4B AS | Real estate | 2015 |
| Holtskogen N6 AS | Real estate | 2015 |
| Holtskogen Utvikling AS | Professional & scientific | 2010 |
| Holumporten AS | Real estate | 2006 |
| Holy AS | Financial services | 1996 |
| Holøymoen Holding AS | | 2025 |
| Homb Holding AS | Financial services | 2012 |
| Homb Invest AS | Financial services | 2017 |
| Homb Optihz AS | | 2026 |
| Homeopat Og Kinesiolog Siri Tilset AS | Health & social care | 2014 |
| Hommelvik Eiendom Da | Real estate | 2004 |