| Gina Tricot AS | Wholesale & retail | 2008 |
| Gine AS | Wholesale & retail | 2026 |
| Ginger Bear AS | Hospitality | 2025 |
| Ginger Management AS | Professional & scientific | 2013 |
| Ginie AS | Professional & scientific | 2020 |
| Gininvest AS | Wholesale & retail | 1998 |
| Ginko AS | Financial services | 2017 |
| Ginny AS | Wholesale & retail | 1990 |
| Ginor AS | Real estate | 1995 |
| Ginor Eiendom AS | Real estate | 2019 |
| Ginvest AS | | 2025 |
| Gioia AS | Manufacturing | 2010 |
| Giotto AS | Financial services | 2000 |
| Giovannis Fasadetjeneste AS | Wholesale & retail | 2023 |
| Gipling Bygginvest AS | Real estate | 1996 |
| Gipsmaker Gatobi AS | Construction | 2006 |
| Gipsmakeriet AS | Manufacturing | 2015 |
| Gir Malerservice AS | Construction | 2026 |
| Girafe AS | Professional & scientific | 2003 |
| Giraff Media AS | Professional & scientific | 2011 |
| Giraffa AS | Financial services | 2005 |
| Gire AS | Transport & logistics | 2019 |
| Girl.In.Oslo AS | Wholesale & retail | 2026 |
| Girls Just Wanna Have Funds AS | | 2024 |
| Girlsguts AS | Information & communication | 2010 |
| Giro Invest 2 AS | | 2025 |
| Giro Invest AS | Real estate | 2012 |
| Giro Sedna AS | | 2024 |
| Giro Trade AS | | 2019 |
| Girotondo AS | Hospitality | 2017 |
| Giske Omsorg AS | Real estate | 2022 |
| Gisle Haug Holding AS | | 2025 |
| Gislerud Eiendom AS | Real estate | 2013 |
| Gislerud Holding AS | Arts & recreation | 2020 |
| Gislesvei 10 AS | Real estate | 2016 |
| Gislevold Skog Nord Ans | Real estate | 2012 |
| Gismarvik Vindkraft AS | Energy | 2012 |
| Gismerøya Eiendom AS | Real estate | 2022 |
| Gisnafallet Kraftverk AS | Energy | 2007 |
| Gisnor Invest AS | | 2019 |
| Giso AS | Other services | 2018 |
| Gitberry AS | Information & communication | 2015 |
| Gittan Advokat AS | Professional & scientific | 2006 |
| Giugiario AS | | 2016 |
| Giv Holding AS | | 2024 |
| Give More AS | Professional & scientific | 2019 |
| Giverstolen Invest AS | | 2023 |
| Giving Holding Company AS | Financial services | 2018 |
| GIXXER1K AS | Real estate | 2012 |
| Gizmo AS | | 2008 |
| Gizmolina & Co. AS | Professional & scientific | 2021 |
| Giæver-Berg Da | Administrative & support | 2000 |
| GJ Bolig AS | Real estate | 2020 |
| Gjaf Invest AS | | 2021 |
| Gjallarhorn Interactive AS | Information & communication | 2021 |
| Gjataj Yan Holding AS | Wholesale & retail | 2017 |
| Gjedda Holding AS | | 2020 |
| Gjedda Retail Consulting AS | Wholesale & retail | 2010 |
| Gjeddå Capital AS | Financial services | 2018 |
| Gjedebo Holding AS | Professional & scientific | 2023 |
| Gjefle Invest AS | | 2022 |
| Gjeine Holding AS | Administrative & support | 2005 |
| Gjeiskelid Kraft AS | Energy | 2025 |
| GJELD24 AS | Professional & scientific | 2023 |
| Gjellebekkstubben 10 AS | Real estate | 2011 |
| Gjellebekkstubben 12 AS | Real estate | 2011 |
| Gjelleråsen Næringspark AS | Real estate | 2019 |
| Gjellestad Holding AS | | 2020 |
| Gjelsten Arena AS | Real estate | 2020 |
| Gjelsten Bolig AS | Real estate | 2005 |
| Gjelsten Capital AS | | 2025 |
| Gjelsten Equestrian AS | Real estate | 2021 |
| Gjelsten Herlofsen Advokatfirma AS | Professional & scientific | 2022 |
| Gjelsten Holding AS | Real estate | 1998 |
| Gjelsten Interiør AS | Wholesale & retail | 2005 |
| Gjelsten Residential Bergen AS | | 2020 |
| Gjelsten Residential Oslo AS | Real estate | 2023 |
| Gjemet AS | Real estate | 2010 |
| Gjemlestad Kraftverk AS | Energy | 2020 |
| Gjemme AS | Manufacturing | 2026 |
| Gjemmekontor AS | Professional & scientific | 2012 |
| Gjemo AS | | 2025 |
| Gjena AS | Real estate | 2000 |
| Gjenbruksfabrikken Sosialt Entreprenørskap AS | Wholesale & retail | 2023 |
| Gjengstø Agenturer AS | Wholesale & retail | 1998 |
| Gjenklang AS | Arts & recreation | 2022 |
| Gjenklang Og Skatter Da | Wholesale & retail | 2026 |
| Gjennombrudd AS | Real estate | 2005 |
| Gjennomtenkt AS | Information & communication | 2019 |
| Gjennomtenkt Investering Holding AS | Real estate | 2021 |
| Gjensidige Forsikring ASA | Financial services | 2010 |
| Gjensidige Mobility Group AS | Administrative & support | 2021 |
| Gjensidige Norge AS | Financial services | 1857 |
| Gjensidige Pensjonsforsikring AS | Financial services | 2005 |
| Gjerdar AS | | 1975 |
| Gjerde & Byhring AS | Wholesale & retail | 1965 |
| Gjerde Eiendomsstrategi AS | Professional & scientific | 2026 |
| Gjerde Ventures AS | | 2026 |
| Gjerdingen AS | Financial services | 1988 |
| Gjerdrums Vei 10 G AS | Real estate | 2006 |