| Gresu Invest AS | Real estate | 2005 |
| Gricon AS | Professional & scientific | 2019 |
| Grieg Fjord Sailing AS | Administrative & support | 2018 |
| Grimmergata 5 AS | Real estate | 2000 |
| Grimmergata Eiendom AS | Real estate | 2016 |
| Grimmermat AS | Wholesale & retail | 1998 |
| Grind Tech AS | Construction | 2014 |
| Groas AS | Wholesale & retail | 2011 |
| Growth 9 AS | Professional & scientific | 2022 |
| Grua Holding AS | Real estate | 2021 |
| Grytten AS | Administrative & support | 1920 |
| Grytten Invest AS | Financial services | 2012 |
| Græsdal Bygg AS | Construction | 2007 |
| Græsdal Regnskap AS | Professional & scientific | 1980 |
| Grøn AS | Financial services | 2018 |
| Grønholmen AS | Real estate | 2015 |
| Grønne Fingre AS | Wholesale & retail | 1996 |
| GS Production Holding AS | | 2017 |
| GT Distribusjon AS | Transport & logistics | 2005 |
| Gudbrandsdal Trading AS | Other services | 1981 |
| Guide to Go AS | Information & communication | 2023 |
| Gullhandel Nordvest AS | Wholesale & retail | 2000 |
| Gullsmed Egil Kvamsås AS | Other services | 2019 |
| Gullsmed Stamnæss AS | Wholesale & retail | 2013 |
| Gulv Slipe Teknikk AS | Wholesale & retail | 2018 |
| Gunders Holding AS | Real estate | 2018 |
| Gundersen Eiendom Aalesund AS | Real estate | 2018 |
| Gunnar Fuglseth Drift Og Vedlikehold Eiendom AS | Administrative & support | 2018 |
| Gunnar Jørgensen Eiendom AS | Real estate | 2000 |
| Gunnar Langva Eiendom AS | Agriculture & fishing | 2015 |
| Gunnar Langva Invest AS | Financial services | 2009 |
| Gustav R. Hareide AS | Health & social care | 2015 |
| Gygre AS | Information & communication | 2017 |
| Gynekologsenteret AS | Health & social care | 2021 |
| Gresu A/S | Real estate | 1988 |
| Gunnar Langva AS | Agriculture & fishing | 1996 |
| Gårdsopplevelser Ipt SA | Health & social care | 2017 |
| Gåseid Eiendom AS | Real estate | 2009 |
| Gåseide Gravmonumenter AS | Manufacturing | 2020 |
| Gøta Gård AS | Agriculture & fishing | 2025 |
| H & H Kvasnes AS | Real estate | 2007 |
| H Skulstad Eiendom AS | Real estate | 1987 |
| H-Gaarden AS | Real estate | 2024 |
| H-Vinduet AS | Manufacturing | 1974 |
| H-Vinduet Handel AS | Wholesale & retail | 2018 |
| H. Brandal Holding AS | | 2009 |
| H. Enersen Holding AS | Wholesale & retail | 2017 |
| H. Helgesen AS | | 2012 |
| H.S. Bygg AS | Construction | 2015 |
| H1 Eiendom AS | Real estate | 2016 |
| H2 Norway AS | Wholesale & retail | 2019 |
| H2 Ventures AS | | 2026 |
| H2 Viking AS | Transport & logistics | 2014 |
| H2DESIGN AS | Professional & scientific | 2016 |
| H2OSOIL AS | Professional & scientific | 2023 |
| Haagensen Transport AS | Transport & logistics | 2015 |
| Haagensen Transportservice Da | Transport & logistics | 2008 |
| Haahjem Holding AS | | 2020 |
| Habilo AS | Professional & scientific | 2020 |
| Hadi Invest AS | Manufacturing | 2005 |
| Hafsarni AS | Agriculture & fishing | 2015 |
| Hagior AS | Financial services | 2005 |
| Hagior Holding AS | | 2023 |
| Hago Eiendom AS | Real estate | 2011 |
| Hair & There Ålesund AS | Other services | 1996 |
| Hair Fashion AS | Other services | 1997 |
| Hal Kapital AS | Real estate | 2014 |
| Hallo Mor AS | Wholesale & retail | 2019 |
| Halmar AS | Health & social care | 2019 |
| Halrynjo Holding AS | | 2024 |
| Halve Kongeriket AS | Arts & recreation | 2020 |
| Halvorsen Service Partner AS | Administrative & support | 2008 |
| Hamelo AS | | 2001 |
| Hammerhai AS | Information & communication | 2012 |
| Hammerslia AS | Real estate | 2015 |
| Hammervolden Eiendom 2 AS | Real estate | 2021 |
| Hammervolden Eiendom AS | Real estate | 2020 |
| Hammerås & Sønn Bilverksted AS | Other services | 2012 |
| Hammos Invest AS | | 2022 |
| Hamre Transport AS | Transport & logistics | 1998 |
| Handelshuset Rønneberg AS | Real estate | 2001 |
| Hangrø Invest AS | | 2026 |
| Hanken Utleie Og Drift AS | Administrative & support | 2025 |
| Hansengården Eiendom AS | Real estate | 2001 |
| Hanson AS | | 2022 |
| Happy Houses AS | Construction | 2023 |
| Happyhouse Holding AS | Construction | 2022 |
| Haram Invest AS | Real estate | 2002 |
| Harang Bygg AS | Construction | 2024 |
| Harcon AS | Professional & scientific | 2007 |
| Hareide Holding AS | | 2011 |
| Harfinn Invest AS | Financial services | 2013 |
| Harmonibygg AS | Real estate | 2019 |
| Harøy Eiendom AS | Real estate | 2010 |
| Harøy Infrastructure AS | | 2023 |
| Hasleneset Hytter AS | Real estate | 2011 |
| Hatlane Autoservice AS | Wholesale & retail | 1997 |
| Hatlane Fysioterapi AS | Health & social care | 2010 |
| Hatlane Panorama AS | Real estate | 2026 |
| Hatledal Invest AS | Wholesale & retail | 2012 |