| Gulv Og Vegg Solutions AS | Construction | 2025 |
| Gunder & Pers Rekruttering AS | Administrative & support | 2002 |
| Gundersen Fysikalske Ans | Health & social care | 1993 |
| Gunnarsrud AS | Real estate | 2026 |
| Gunnerud Eiendom AS | Real estate | 2002 |
| Gupta Eiendom AS | | 2010 |
| Guri Five AS | Education | 2024 |
| Guriåsen AS | Real estate | 2003 |
| Gursken Regnskap AS | Professional & scientific | 2025 |
| Gute AS | Real estate | 2012 |
| Guymar AS | Professional & scientific | 2012 |
| GV Konsulenttjenester AS | Professional & scientific | 2008 |
| GWP Aktiv AS | Health & social care | 2018 |
| Gyldenløve Bilservice AS | Other services | 1997 |
| Gyldenløve Holding AS | Wholesale & retail | 2005 |
| Gyldenløve Ønh AS | Health & social care | 2023 |
| Gyllstrøm & Johansen AS | Professional & scientific | 2015 |
| Gymassist AS | Administrative & support | 2024 |
| Gymcore AS | Wholesale & retail | 2017 |
| Gynekologklinikken AS | Health & social care | 1996 |
| Gyrihaugen Hol AS | Real estate | 2015 |
| Gullsmed Harry Ulsteen AS | Wholesale & retail | 1981 |
| Gåserud Eiendom AS | Real estate | 1991 |
| Gåserudgata Eiendom AS | Real estate | 2003 |
| Göran Sjödéns Rehabshop Norge AS | Wholesale & retail | 2014 |
| Gøj Tøy AS | Manufacturing | 2008 |
| H Gulskogen AS | Wholesale & retail | 2024 |
| H Infra AS | Construction | 2024 |
| H K Lien Holding AS | Financial services | 2005 |
| H R Trans Ans | | 1989 |
| H&H Vigneto AS | Manufacturing | 2021 |
| H&K Suspension AS | Manufacturing | 2020 |
| H-Bygg Elektro & Prosjekt AS | Construction | 2025 |
| H-H Invest AS | Professional & scientific | 2008 |
| H-P Invest II AS | Financial services | 2017 |
| H.M.Pettersen AS | Professional & scientific | 2026 |
| H2M Holding AS | Financial services | 2014 |
| H7FL AS | Real estate | 2020 |
| Ha-Kristiansand AS | Wholesale & retail | 2022 |
| Haa Konsulent AS | Professional & scientific | 2025 |
| Haacon Consulting AS | Information & communication | 2010 |
| Haad Holding AS | | 2026 |
| Haand Entreprenør AS | Construction | 2026 |
| Haandbryggeriet AS | Manufacturing | 1989 |
| Haaning AS | Hospitality | 2001 |
| Haaning Styre- Og Lederkompetanse AS | Professional & scientific | 2018 |
| Haao Invest AS | Professional & scientific | 2014 |
| Haar Atelier AS | Other services | 2020 |
| Haarberg & Bretvik Betongsaging AS | Construction | 2026 |
| Haavfoss AS | | 2009 |
| Habitatus Utvikling AS | Real estate | 2021 |
| Hagan Driftsbygg AS | Real estate | 2013 |
| Hagatjernveien 23 AS | Real estate | 2020 |
| Hagcom AS | | 2019 |
| Hagebyen Utvikling 2 AS | Real estate | 2015 |
| Hagegartner AS | Administrative & support | 2020 |
| Hageveien Invest AS | | 2017 |
| Haghold AS | | 2019 |
| Hagsten Invest AS | Agriculture & fishing | 2021 |
| Hahaugvegen Eiendom AS | Real estate | 2019 |
| Hairo AS | Other services | 2026 |
| Hairplay AS | Other services | 2019 |
| Hak Holding AS | Professional & scientific | 2010 |
| Haley Holding AS | Information & communication | 2015 |
| Haley Productions AS | Information & communication | 2018 |
| Halleby Holding AS | | 2022 |
| Hallingdalboligutleie AS | Real estate | 2020 |
| Hallingstad Holding AS | Financial services | 2017 |
| Hallpartner AS | Real estate | 2026 |
| Halvorsen & Reine AS | Professional & scientific | 1997 |
| Halw AS | Real estate | 2017 |
| Hamanor AS | Administrative & support | 2023 |
| Hamarkollen 24 AS | Real estate | 2016 |
| Hamborgstrøm AS | Real estate | 2017 |
| Hamburger Og Isbar CC Ans | Hospitality | 2007 |
| Handel Holding II AS | Real estate | 2007 |
| Hanekleiva Utvikling AS | Real estate | 2016 |
| Hanki Holding AS | Real estate | 2022 |
| Hannes Cafe Og Golfshop AS | Wholesale & retail | 2025 |
| Hannover Heavy AS | Wholesale & retail | 2018 |
| Hanoc Consulting AS | Professional & scientific | 2020 |
| Hanoc Eiendom AS | Real estate | 2021 |
| Hanoc Holding AS | Other services | 2018 |
| Hanohra Holding AS | Manufacturing | 2005 |
| Hans Hassel AS | | 2018 |
| Hans Kiærsgate 2 AS | Real estate | 1980 |
| Hans-Christian Holm AS | Information & communication | 2003 |
| Hansemann AS | Professional & scientific | 2016 |
| Hansen & Andersen AS | Wholesale & retail | 2018 |
| Hansen & Andersen Holding AS | Real estate | 2020 |
| Hansens Røkeri AS | Manufacturing | 1998 |
| Hanxin Holding AS | Real estate | 2018 |
| Harald Lyche Holding AS | Real estate | 2005 |
| Haraldsson CC AS | Wholesale & retail | 2023 |
| Haraldsson Gulskogen AS | Wholesale & retail | 2019 |
| Harbex Invest Og Data AS | Administrative & support | 1994 |
| Hard Soft & Firm Ans | Information & communication | 2002 |
| Hardertek AS | Professional & scientific | 2015 |
| Harket Invest AS | | 2026 |
| Harmo AS | Professional & scientific | 2005 |