| Hanne Pettersen Arkitektur AS | Professional & scientific | 2024 |
| Hanne Rivrud Holding AS | Arts & recreation | 2024 |
| Hanne Svee Holding AS | | 2025 |
| Hannekristinrohde.No AS | Arts & recreation | 2015 |
| Hannevig AS | Real estate | 1991 |
| Hannevik Bygg AS | Construction | 1992 |
| Hanni Invest AS | | 2019 |
| Hannibal Therapeutics AS | Professional & scientific | 2025 |
| Hannord Invest AS | Real estate | 2005 |
| Hano RG AS | Administrative & support | 2005 |
| Hanrem Invest AS | Information & communication | 2013 |
| Hanriks Holding AS | Professional & scientific | 2018 |
| Hanriks Invest AS | | 2018 |
| Hanrune Studio AS | Professional & scientific | 2016 |
| Hans & Olaf Fysioterapi AS | Health & social care | 1989 |
| Hans & Olaf Trening AS | Arts & recreation | 1998 |
| Hans a Flaaten AS | Wholesale & retail | 1990 |
| Hans Arne Hånes Holding AS | | 2022 |
| Hans Burums Vei 30 AS | Real estate | 2019 |
| Hans Christian Hovde AS | Professional & scientific | 1998 |
| Hans Eiendom AS | Real estate | 2005 |
| Hans Fredrik Høyskel AS | Financial services | 2005 |
| Hans Grimsrud Holding AS | | 2005 |
| Hans H Holding AS | Wholesale & retail | 1990 |
| Hans Haugerud AS | Construction | 1968 |
| Hans Henrik Grønsleth Invest AS | Real estate | 2020 |
| Hans Hus AS | Professional & scientific | 2018 |
| Hans Hvide & Co AS | Real estate | 1923 |
| Hans Hvide Invest 2 AS | Real estate | 2021 |
| Hans Hvide Invest AS | Real estate | 2021 |
| Hans Invest AS | Financial services | 2005 |
| Hans J Haraldsen AS | Information & communication | 2015 |
| Hans Jægers Kvartal AS | Real estate | 2024 |
| Hans Kristian Hustad AS | Professional & scientific | 2004 |
| Hans Martin AS | Real estate | 2021 |
| Hans Møller Gasmannsvei 7 AS | Real estate | 2011 |
| Hans Nielsen Hauge Barnehage AS | Education | 2016 |
| Hans Nielsen Hauges Grunnskole AS | Education | 2019 |
| Hans Nissens Gate 3 AS | Real estate | 2014 |
| Hans Nissens Gate 3 Holding AS | Real estate | 2019 |
| Hans P. Kleppen AS | Professional & scientific | 2021 |
| Hans Petter Ektvedt Holding AS | Financial services | 2017 |
| Hans Petter Tangen AS | Real estate | 1996 |
| Hans Selskap AS | | 2025 |
| Hans Tanks Gate 5 AS | Real estate | 2022 |
| Hans-Petter Ulven AS | Administrative & support | 2005 |
| HANS1 Tech AS | Information & communication | 2025 |
| Hansa Bidco AS | Transport & logistics | 2019 |
| Hansa Holdco AS | | 2015 |
| Hansa Safety Services AS | Manufacturing | 2003 |
| Hansabrygge AS | | 2026 |
| Hansastaden Holding AS | | 2026 |
| Hansebu AS | Financial services | 2017 |
| Hansem Invest AS | | 2014 |
| Hansemgruppen Holding AS | Financial services | 2005 |
| Hansen & Bondevik AS | Professional & scientific | 2023 |
| Hansen Arnesen Invest AS | | 2022 |
| Hansen Capital AS | | 2026 |
| Hansen Carabin Consult Ans | Hospitality | 2005 |
| Hansen Eiendom Og Konsult AS | Real estate | 2005 |
| Hansen Ikt AS | Information & communication | 2018 |
| Hansen Knutsen AS | Professional & scientific | 2021 |
| Hansen Og Holm Arkitekter AS | Professional & scientific | 2020 |
| Hansen Og Nielsen Bygningsrehabilitering Da | Construction | 2003 |
| Hansen Technologies Holdings AS | Information & communication | 2010 |
| Hansen Technologies Norway AS | Information & communication | 1992 |
| Hansen Totalbygg AS | Construction | 2014 |
| Hansen Watch Co AS | Manufacturing | 2024 |
| HANSEN99 AS | Transport & logistics | 2025 |
| Hanserudveien 11 AS | Real estate | 2020 |
| Hansgrohe Salgskontor Nuf | Wholesale & retail | 1995 |
| Hansia AS | | 2012 |
| Hansim Holding AS | | 2024 |
| Hansko AS | | 2023 |
| Hanssen Capital AS | | 2021 |
| Hanssen Flatnes Invest Ans | Real estate | 2016 |
| Hansson & Bergstrand Matter & Tepper Da | Wholesale & retail | 2005 |
| Hansson Eiendom AS | Real estate | 1998 |
| Hansson Invest AS | Financial services | 1998 |
| Hanssongruppen Kapital AS | Financial services | 2007 |
| Hanstad Næringseiendom AS | Real estate | 2016 |
| Hansteens Gate 7 Holding AS | Real estate | 2024 |
| Hansteensgate 7 Ans | Real estate | 1994 |
| Hansy Eiendom AS | Real estate | 2005 |
| Hansy Skog AS | | 2025 |
| Hantek Audio AS | Wholesale & retail | 1995 |
| Hanting Nordic AS | Wholesale & retail | 2016 |
| Hanum AS | | 2019 |
| Hanum Holding AS | | 2019 |
| Hanwha Engine Investment Norway AS | | 2025 |
| Hanwha Ocean Co., Ltd. - Oslo Liaison Office | Administrative & support | 2020 |
| Hap-Ben Invest AS | Financial services | 2012 |
| Hapa Holding AS | Real estate | 2015 |
| Hapit AS | Real estate | 2024 |
| Hapit Eiendom AS | Real estate | 2024 |
| Haplo Holding AS | | 2022 |
| Haploid AS | Professional & scientific | 2019 |
| Hapo Consult AS | Real estate | 1994 |
| Hapow Invest AS | Health & social care | 2019 |
| Happii AS | Professional & scientific | 2021 |