| Hexagon Invest AS | Real estate | 2004 |
| Hexagon Produksjon AS | Information & communication | 2007 |
| Hexagon Purus ASA | Professional & scientific | 2017 |
| Hexagon Purus HK Holding AS | Professional & scientific | 2021 |
| Hexagon Technology H2 AS | Administrative & support | 2018 |
| Hexatronic AS | Wholesale & retail | 2012 |
| Heximal Holding AS | | 2022 |
| Hexiron Exchange AS | | 2009 |
| Hexo Securities AS | Financial services | 2016 |
| Hexram AS | Administrative & support | 2026 |
| Hexspoor Holding AS | | 2024 |
| Hextech AS | Professional & scientific | 2020 |
| Hey Ho AS | | 2024 |
| Hey Trading AS | Wholesale & retail | 2020 |
| Heyden Energy AS | Professional & scientific | 2008 |
| Heyerdahl Coffee AS | Wholesale & retail | 2023 |
| Heyerdahl Consulting AS | Professional & scientific | 2019 |
| Heyerdahl Holding Invest AS | Construction | 2005 |
| Heyerdahl Invest Ans | Real estate | 2000 |
| Heyerdahl Invest AS | Real estate | 2006 |
| Heyerdahl Jewellery Design AS | Professional & scientific | 2008 |
| Heyerdahls Vei 3B AS | Real estate | 2005 |
| Heyerdahls Vei 4 Da | Real estate | 2017 |
| Heyern AS | Real estate | 2005 |
| Heym AS | Information & communication | 2023 |
| Heyra Norway AS | Information & communication | 2020 |
| Heywaitr AS | Wholesale & retail | 2025 |
| Hezari Holding AS | | 2019 |
| HF Filminvest AS | | 2023 |
| Hfa AS | | 2020 |
| Hfa Holding AS | Health & social care | 2018 |
| HFB AS | Construction | 2014 |
| HFB Invest AS | Real estate | 2006 |
| Hfe AS | Real estate | 2023 |
| HFG1 AS | Real estate | 2016 |
| HFH Solsenter AS | Other services | 2018 |
| HFJ Consulting AS | Professional & scientific | 2023 |
| HFL AS | Water & waste | 2015 |
| Hfossberg Invest AS | | 2025 |
| HFP Capital AS | | 2025 |
| HFQ Holding AS | | 2024 |
| HFR Holdco AS | | 2024 |
| HFR Invest AS | Financial services | 2016 |
| HFS Øvre Slottsgate 18/20 AS | Real estate | 2017 |
| Hfsd Investments AS | Professional & scientific | 2023 |
| Hfu AS | | 2021 |
| HFZ Holding AS | | 2026 |
| HG Collection Ans | Professional & scientific | 2004 |
| HG Entertainment AS | Arts & recreation | 2017 |
| HG Håndverksgruppen Norge AS | Construction | 2012 |
| HG Projectco 1 AS | Transport & logistics | 2023 |
| HG Stubberud AS | Transport & logistics | 2020 |
| HG Sømme Holding AS | | 2018 |
| HG Trading AS | Professional & scientific | 2023 |
| Hga Holding AS | Professional & scientific | 2012 |
| HGB AS | Real estate | 2018 |
| HGC AS | Professional & scientific | 2016 |
| HGF Eiendom AS | Real estate | 2018 |
| HGF Invest AS | Real estate | 2014 |
| HGH Management AS | Professional & scientific | 2016 |
| HGM AS | Construction | 2020 |
| HGN Elektro AS | Construction | 2017 |
| HGS Holding AS | | 2020 |
| HGV12 AS | Real estate | 2021 |
| HGZ Arkitektur AS | Professional & scientific | 2017 |
| HH & Co. Holding AS | | 2022 |
| HH Advisory AS | | 2023 |
| HH Apollon AS | Professional & scientific | 2018 |
| HH Consulting AS | Administrative & support | 2024 |
| HH Creative Media AS | Professional & scientific | 2026 |
| HH Elektro AS | Construction | 2011 |
| HH Hoel Holding AS | Professional & scientific | 2026 |
| HH Holdco AS | | 2021 |
| HH Holdin AS | Professional & scientific | 2018 |
| HH Håndverk AS | Construction | 2019 |
| HH Legetjenester AS | Health & social care | 2023 |
| HH Maskin Og Utleie AS | Transport & logistics | 2025 |
| HH Park Lane AS | Real estate | 2006 |
| HH Tech AS | Information & communication | 2026 |
| HH Trade AS | Wholesale & retail | 2025 |
| HH Utvikling AS | Real estate | 2021 |
| Hh-Boligdesign AS | Real estate | 2005 |
| HH25 Drift AS | Hospitality | 2025 |
| Hhaakons Holding AS | | 2020 |
| Hhe Invest AS | Financial services | 2009 |
| Hhep Invest AS | Financial services | 2018 |
| HHF AS | | 2021 |
| HHG8 AS | | 2026 |
| HHH Advisory AS | Professional & scientific | 2026 |
| HHH Consulting AS | Professional & scientific | 2026 |
| HHH Investeringer AS | Real estate | 2022 |
| HHH Ventures AS | Financial services | 2016 |
| Hhi AS | Wholesale & retail | 2026 |
| Hhio AS | | 2022 |
| HHK Holding AS | | 2025 |
| HHN Asset Management AS | | 2025 |
| HHN Invest AS | Professional & scientific | 2005 |
| Hho Lding AS | | 2020 |
| HHT Invest AS | Real estate | 2013 |
| HHV 114 AS | Real estate | 2018 |