| Ghawar AS | | 2017 |
| GHL Eiendom AS | Administrative & support | 2011 |
| GHL Fjernvarme AS | Energy | 2020 |
| GHL Gruppen AS | Administrative & support | 2005 |
| GHL Hage & Landskap AS | Administrative & support | 1999 |
| Ghl-Utleie AS | Administrative & support | 2011 |
| Gi Eiendom AS | Real estate | 1994 |
| Gi Service AS | Professional & scientific | 2021 |
| Gikas Holding AS | Real estate | 2015 |
| Gimle Pub AS | Hospitality | 2023 |
| Gimsøy Eiendom AS | Real estate | 1998 |
| Gimsøy Garasjelag SA | Transport & logistics | 1982 |
| Gimsøy Plass 5 AS | Real estate | 2026 |
| Gimsøy Spiseri AS | Hospitality | 2013 |
| Gina Helgesen AS | Other services | 2015 |
| Gisholt & Finne AS | Wholesale & retail | 2002 |
| Gisholt & Finne Eiendom AS | Real estate | 2013 |
| Gjerpen Grønt AS | Administrative & support | 2005 |
| Gjerpen Maskin AS | Construction | 2018 |
| Gjerpen Utvikling AS | Real estate | 2017 |
| Gjerpenshavna Barnehage SA | Education | 2001 |
| Gjerpenshavna Utvikling AS | Real estate | 2018 |
| GJG Eiendom Ans | Real estate | 2005 |
| Glaadly AS | Information & communication | 2022 |
| Glasshjørnet AS | Real estate | 2012 |
| Glassmester Thoresen AS | Manufacturing | 1989 |
| Glassmestergården AS | Real estate | 2018 |
| Glenn Døvik AS | | 2016 |
| Glenna Helse Og Eiendom AS | Real estate | 2017 |
| Glibber AS | Financial services | 2018 |
| Global Web Partner AS | Wholesale & retail | 2016 |
| Global-Invest AS | Real estate | 2004 |
| Go Landskap AS | Construction | 2025 |
| Goal Digger AS | | 2022 |
| Goberg Eiendom AS | Real estate | 2007 |
| Golf Butikken AS | Wholesale & retail | 1993 |
| Golla Holding AS | | 2025 |
| Gonsholt Invest AS | | 2024 |
| Good Old Days Barbershop Da | Other services | 2011 |
| Graafisk AS | Professional & scientific | 2023 |
| Grand Selskapslokaler AS | Real estate | 2022 |
| Granmo Holding AS | Real estate | 2016 |
| Grasmark AS | | 2026 |
| Gravglans Da | Administrative & support | 2025 |
| Gravity Sport AS | | 2014 |
| Greaker Eiendom AS | Real estate | 2014 |
| Great Nordic AS | Professional & scientific | 2014 |
| Green Ammo AS | Manufacturing | 2019 |
| Green Capital AS | Real estate | 2018 |
| Green Clean Technology AS | Wholesale & retail | 2014 |
| Green Innovation Norway AS | Professional & scientific | 2020 |
| Green Light Ventures AS | | 2025 |
| Greenrow Technologies AS | Professional & scientific | 2024 |
| Gregor Eiendom AS | Real estate | 2012 |
| Gregorius Eiendom AS | Real estate | 2011 |
| Gregorius Selskapsmat AS | Hospitality | 2024 |
| Grei Holding AS | | 2023 |
| Grendrift AS | Professional & scientific | 2024 |
| Grenen Digitaltrykkeri AS | Manufacturing | 2011 |
| Grenir AS | Real estate | 1965 |
| Grenland Anlegg Da | Construction | 2009 |
| Grenland Antik Da | Wholesale & retail | 2011 |
| Grenland Antirust AS | Other services | 2015 |
| Grenland Arena AS | Real estate | 2006 |
| Grenland Asfalt Og Maskintjenester AS | Construction | 2019 |
| Grenland Assuranse AS | Financial services | 2022 |
| Grenland Autosenter AS | Wholesale & retail | 2025 |
| Grenland Betongsaging AS | Construction | 2007 |
| Grenland Bil AS | Wholesale & retail | 2019 |
| Grenland Bilservice AS | Wholesale & retail | 2017 |
| Grenland Bilservice Holding AS | Professional & scientific | 2016 |
| Grenland Blomsterdrift AS | Wholesale & retail | 2013 |
| Grenland Bobilsenter AS | Wholesale & retail | 2016 |
| Grenland Bygg AS | Construction | 2020 |
| Grenland Bygg Og Armering AS | Construction | 2020 |
| Grenland Crossfit AS | Health & social care | 2013 |
| Grenland Data AS | Wholesale & retail | 2000 |
| Grenland Data Center AS | Information & communication | 2026 |
| Grenland Droneservice AS | Professional & scientific | 2025 |
| Grenland Dyreklinikk AS | Professional & scientific | 2020 |
| Grenland Dør Og Vindu AS | Wholesale & retail | 2018 |
| Grenland Eiendomsservice Da | Real estate | 1999 |
| Grenland Fallskjermfly AS | Administrative & support | 2022 |
| Grenland Finans AS | Financial services | 2005 |
| Grenland Flåteservice AS | Manufacturing | 2011 |
| Grenland Fotterapi Da | Health & social care | 2003 |
| Grenland Gokart AS | Arts & recreation | 2026 |
| Grenland Golfkafe Da | Hospitality | 1999 |
| Grenland Graveservice AS | Construction | 1998 |
| Grenland Installasjon AS | Construction | 2021 |
| Grenland Investeringsselskap AS | Real estate | 2024 |
| Grenland Knivsliperi Da | Manufacturing | 2002 |
| Grenland Kompetanse AS | Information & communication | 2014 |
| Grenland Landbruksservice AS | Agriculture & fishing | 2006 |
| Grenland Luftsportssenter AS | Transport & logistics | 2015 |
| Grenland Maskinutleie AS | Administrative & support | 2022 |
| Grenland Næringspark AS | Real estate | 1986 |
| Grenland Overflate Vedlikehold AS | Manufacturing | 2014 |
| Grenland Pitstop AS | Wholesale & retail | 2025 |
| Grenland Port & Gjerde AS | Administrative & support | 2020 |