| H. Hornemann Invest AS | Financial services | 2018 |
| H. Skares Bilforretning 2 AS | Wholesale & retail | 2026 |
| H. Skares Bilforretning AS | Wholesale & retail | 2024 |
| H.P. Fallebøe AS | Real estate | 2007 |
| H1 Investment AS | | 2020 |
| H2 Investment AS | | 2021 |
| H6 Invest AS | Construction | 2020 |
| Ha Takst & Rådgivning AS | Professional & scientific | 2023 |
| Haakenstad Eiendom AS | Real estate | 2006 |
| Haaktek AS | Manufacturing | 2015 |
| Hadeland Regnskapsservice AS | Professional & scientific | 2020 |
| Hagen Holding Og Invest AS | | 2021 |
| Hahv Invest AS | Wholesale & retail | 1985 |
| Haiex Plastrør AS | Manufacturing | 1989 |
| Halbakken AS | | 2026 |
| Haldenjordet Kabellag SA | Information & communication | 1992 |
| Hallingby Bil Og Dekksenter AS | Other services | 2013 |
| Hallingby Taxi Ans | Transport & logistics | 1998 |
| Hallvard Thoresen Holding AS | | 2018 |
| Halsteinrud Rådgivning Ans | Professional & scientific | 2009 |
| Hammer Takst AS | Real estate | 2023 |
| Hammerbrogaten 9 a Og B AS | Real estate | 2006 |
| Hammertime Holding AS | Real estate | 2022 |
| Hamp AS | Wholesale & retail | 2020 |
| Hamro Invest AS | Financial services | 2014 |
| Handelsbygg Eiendom AS | Real estate | 2009 |
| Handelseiendommer Øst AS | Real estate | 2017 |
| Hanola AS | Financial services | 2017 |
| Hans Grenaders Vei 2 AS | Real estate | 2023 |
| Hansens Leiekart AS | Administrative & support | 2020 |
| Happy Times AS | Hospitality | 2018 |
| Harald Smith AS | Financial services | 2011 |
| Haraldsson Brio AS | Wholesale & retail | 1997 |
| Haratrøen AS | Real estate | 2022 |
| Harbinger AS | Wholesale & retail | 2024 |
| Harehaugveien Utvikling AS | Real estate | 2024 |
| Haring AS | Wholesale & retail | 2005 |
| Hathaco AS | Manufacturing | 2024 |
| Haug Apotek AS | Wholesale & retail | 2021 |
| Haug Legesenter Da | Health & social care | 1998 |
| Haugen & Mellerud AS | Real estate | 2002 |
| Hauger Terrasse AS | Real estate | 2023 |
| Haugerud Regnskap AS | Real estate | 1993 |
| Haughovd Invest AS | Real estate | 2021 |
| Haugio AS | Real estate | 2005 |
| Haugsbygd Grunneierlag SA | Arts & recreation | 2018 |
| Haut Invest AS | | 2020 |
| Haziraj Holding AS | | 2025 |
| HBJ Holding AS | Real estate | 2009 |
| HC Finans AS | | 2021 |
| HCG Utvikling AS | Real estate | 2019 |
| HCS AS | | 2021 |
| Hefa Eiendom Da | Real estate | 2004 |
| Heggen Bygg Og Anlegg AS | Construction | 2014 |
| Hegi AS | Real estate | 1988 |
| Heishuset Butikkeiendom AS | Real estate | 2012 |
| Heistad Butikkeiendom AS | Real estate | 2010 |
| Helge R Olsen & Sønn AS | Transport & logistics | 2001 |
| Helge Tronrud AS | Financial services | 2005 |
| Helgelandsmoen Bil AS | Other services | 2014 |
| Helgelandsmoen Eiendom AS | Real estate | 2016 |
| Helgelandsmoen Næringspark AS | Real estate | 2004 |
| Helges Hagesenter AS | Real estate | 2005 |
| HELIS IMPORT ANS Liv Ødegård og Sigurd Christiansen | Wholesale & retail | 1988 |
| Helitrans Fire Search and Rescue AS | Education | 2001 |
| Helitrans Invest AS | Administrative & support | 2019 |
| Helstøpt AS | Real estate | 2005 |
| Hemag AS | Hospitality | 2005 |
| Hemart AS | | 2021 |
| Hen Gjestgiveri Da | Hospitality | 1989 |
| Hensmoen Eiendom AS | Real estate | 2006 |
| Hensmoen Industribygg AS | Real estate | 2007 |
| Hensmoen Pukkverk AS | Mining & quarrying | 2017 |
| Hensmoen Utvikling AS | Real estate | 2016 |
| Hensmoveien 20 AS | Real estate | 2008 |
| Hensmoveien 98 AS | Real estate | 2008 |
| Hensmoveien Kombibygg 2 AS | Real estate | 2021 |
| Hensmoveien Kombibygg 3 AS | Real estate | 2021 |
| Hensveien 145 AS | Real estate | 2022 |
| Heradsbygda Kiosk Bente Og Janne Senneseth Ans | Wholesale & retail | 1987 |
| Hercus AS | | 2022 |
| Hermanrud Graveservice AS | Construction | 2021 |
| Herøya Butikkeiendom AS | Real estate | 2005 |
| Hesleberg AS | Professional & scientific | 2021 |
| Hesteskoen Alta AS | Real estate | 2016 |
| Hetec AS | Manufacturing | 2003 |
| Hetor Regnskapsservice AS | Professional & scientific | 1987 |
| Hg-Mek AS | Manufacturing | 1997 |
| HH Totalbygg AS | Construction | 2023 |
| Hide Industry AS | Professional & scientific | 2024 |
| Hifinett Da | Wholesale & retail | 1997 |
| High Supply AS | Professional & scientific | 2025 |
| Hightide AS | | 2025 |
| Hinna AS | Real estate | 2025 |
| Hippo Management AS | Education | 2020 |
| Hiptec AS | Professional & scientific | 2016 |
| Histolab Products AS | Wholesale & retail | 2010 |
| Hjertekompasset AS | Education | 2013 |
| HK Bilformidling AS | Wholesale & retail | 2024 |
| HLH Holding AS | | 2021 |