| Gem Invest AS | Real estate | 2014 |
| Gemo-One AS | Professional & scientific | 2020 |
| General Gas Carrier Company III LLG | Transport & logistics | 2000 |
| Generator Technician Services AS | Manufacturing | 2019 |
| Genialt AS | Professional & scientific | 2014 |
| Genoa Holding AS | Professional & scientific | 2024 |
| Geo - Energy Consultancy Ltd | Professional & scientific | 2008 |
| GEO-42 AS | Professional & scientific | 1998 |
| Geoconsult AS | Professional & scientific | 2024 |
| Geoconsulting AS | Professional & scientific | 2018 |
| Geogas Trad SA | Transport & logistics | 1995 |
| Geomec Engineering AS | Professional & scientific | 2002 |
| Geomec Holding AS | Professional & scientific | 2005 |
| Geopina AS | Professional & scientific | 2014 |
| Geopower Solutions AS | Energy | 2024 |
| Geoprovider AS | Professional & scientific | 2013 |
| Geoprovider Holding AS | Professional & scientific | 2022 |
| Geoprovider Seismic AS | Professional & scientific | 2012 |
| Geoteric Holding AS | Information & communication | 2024 |
| Geoteric Norway AS | Information & communication | 2025 |
| Gerhardsen Invest AS | | 2022 |
| Gerimec AS | Real estate | 1987 |
| Gert Gill AS | Professional & scientific | 2008 |
| Gesa Holdings AS | | 2025 |
| Gestalt Arena Da | Administrative & support | 2006 |
| Gesti Eiendom AS | Real estate | 2018 |
| Getguidednorway AS | Administrative & support | 2023 |
| Gets Holding AS | Real estate | 2020 |
| Geventure AS | Financial services | 2017 |
| Gexsys AS | Wholesale & retail | 2006 |
| GF Service AS | Transport & logistics | 2024 |
| GF10A AS | Real estate | 1970 |
| GFV 25 AS | Real estate | 2007 |
| GG Holding AS | Financial services | 2018 |
| Ggrobot AS | | 2022 |
| GH Global Holding AS | Real estate | 2019 |
| Ghagen Invest AS | Wholesale & retail | 2014 |
| Ghgulv AS | Construction | 2013 |
| GHM Film AS | Information & communication | 1987 |
| Ghost AS | Professional & scientific | 2017 |
| Giah AS | Information & communication | 2023 |
| Gift Parenting AS | Education | 2026 |
| Gikka Holding AS | | 2023 |
| Gilje Bolig AS | Real estate | 2023 |
| Gilje Gaard & Gartneri Ans | Agriculture & fishing | 1981 |
| Gilje Investering AS | Real estate | 2018 |
| Gill Invest AS | Real estate | 2002 |
| Gill Sea Aqua AS | Agriculture & fishing | 2015 |
| Gilsor Invest AS | Financial services | 2005 |
| Gimle Finans AS | Real estate | 2020 |
| Gimli AS | Professional & scientific | 2014 |
| Gimli Holding AS | Financial services | 2017 |
| Gina Krog AS | Mining & quarrying | 2016 |
| Gina Krog II AS | Transport & logistics | 2022 |
| Ginza AS | Hospitality | 2026 |
| Gis Eiendom AS | Real estate | 1989 |
| Gis Holding AS | Professional & scientific | 2005 |
| Gismarvik Invest AS | Financial services | 2005 |
| Gitmark Invest AS | | 2025 |
| Give & Receive AS | Information & communication | 2017 |
| Givy AS | Information & communication | 2017 |
| Gjellesvik Invest AS | Professional & scientific | 2009 |
| Gjelsten Totalservice AS | Administrative & support | 2011 |
| Gjemar AS | | 2022 |
| Gjemnes Torg AS | Real estate | 1986 |
| Gjerdeveien 49 Eiendom AS | Real estate | 2007 |
| Gjerland Invest AS | Financial services | 2014 |
| Gjerseth Holding AS | Real estate | 1986 |
| Gjeruldsen Capital AS | | 2026 |
| Gjesdal I AS | | 2021 |
| Gjesteland Invest AS | | 2022 |
| Gjetvik Holding AS | | 2020 |
| GJH Invest AS | Real estate | 2011 |
| GJS AS | | 2020 |
| GK Radio & TV Service Da | Other services | 1991 |
| GK Solutions AS | | 2021 |
| Gke Invest AS | Real estate | 2015 |
| Glacies Holding AS | | 2025 |
| Glad Mat AS | Administrative & support | 1998 |
| Glass & Fasade AS | Construction | 2023 |
| Glassatelier Hebing Efteland Da | Education | 2011 |
| Glassboks AS | Professional & scientific | 2025 |
| Gliinn AS | Information & communication | 2026 |
| Glittenberg Drift Og Forvaltning Ans | Real estate | 2024 |
| Global Contracting Norway AS | Administrative & support | 2011 |
| Global Digital Media AS | Wholesale & retail | 2013 |
| Global Elite AS | | 2025 |
| Global Hus AS | Construction | 2015 |
| Global Maritime AS | Professional & scientific | 1987 |
| Global Maritime Group AS | Professional & scientific | 2012 |
| Global Rig Personnel AS | Administrative & support | 2017 |
| Global Venture Da | Arts & recreation | 1996 |
| Globalt Teamnettverk AS | Wholesale & retail | 2022 |
| Glomar Norge AS | Professional & scientific | 2020 |
| Glomsaker & Glomsaker AS | Real estate | 1998 |
| Glouglou AS | Hospitality | 2021 |
| GM Holding AS | Real estate | 1988 |
| GMB Proff AS | Construction | 2024 |
| GMB Service AS | Construction | 2026 |
| GMC Eiendom AS | Real estate | 2014 |