| Galleon Acquisition Co AS | Professional & scientific | 2021 |
| Galleon Embedded Computing AS | Professional & scientific | 2009 |
| Galleon Investment AS | Real estate | 2021 |
| Galleri 69 Grader Nord Skbr AS | Wholesale & retail | 2012 |
| Galleri Akershus AS | Real estate | 1993 |
| Galleri Art Design AS | Wholesale & retail | 2014 |
| Galleri Artifix AS | Manufacturing | 2012 |
| Galleri Bjelland Limited Nuf | Wholesale & retail | 2025 |
| Galleri Bouhlou AS | Arts & recreation | 2005 |
| Galleri Brandstrup AS | Arts & recreation | 1998 |
| Galleri Briskeby AS | Wholesale & retail | 2005 |
| Galleri Christian Quart Ans | Wholesale & retail | 1990 |
| Galleri Cuba AS | Wholesale & retail | 2008 |
| Galleri D40 AS | Wholesale & retail | 1972 |
| Galleri Fotolabratorium Da | Wholesale & retail | 1989 |
| Galleri Frogner AS | Wholesale & retail | 2012 |
| Galleri Golsa AS | Wholesale & retail | 2017 |
| Galleri Grüner AS | Wholesale & retail | 2021 |
| Galleri Haaken AS | Wholesale & retail | 2012 |
| Galleri J2 AS | Manufacturing | 2015 |
| Galleri JMS AS | Professional & scientific | 2003 |
| Galleri K-Art AS | Wholesale & retail | 2004 |
| Galleri Nota Bene Ans | Wholesale & retail | 1989 |
| Galleri Oslo Invest AS | Real estate | 2019 |
| Galleri Oslo Utvikling AS | Real estate | 2023 |
| Galleri Polaris AS | Wholesale & retail | 2019 |
| Galleri Ramfjord AS | Arts & recreation | 2009 |
| Galleri Riddervoldsgate AS | Wholesale & retail | 2025 |
| Galleri Riis AS | Wholesale & retail | 1985 |
| Galleri Sand AS | Wholesale & retail | 1997 |
| Galleri Servi Da | Wholesale & retail | 2007 |
| Galleri Tuva AS | Wholesale & retail | 2021 |
| Galleri Wang KS | Real estate | 2000 |
| Galleriet 118-120 AS | Real estate | 1988 |
| Galleriet Drift AS | Real estate | 2016 |
| Galleriet Parkering AS | Real estate | 2008 |
| Gallerinora AS | Wholesale & retail | 2021 |
| Gallerylab AS | | 2025 |
| Gallesio Partners AS | Professional & scientific | 2005 |
| Gallicchio & Rickert AS | Professional & scientific | 2016 |
| Gallipoli Invest AS | | 2019 |
| Gallus Invest Holding AS | | 2020 |
| Galopp Invest AS | | 2022 |
| Galt AS | Hospitality | 2017 |
| Galtebo Limited Nuf | Professional & scientific | 2006 |
| Galteland Holding AS | Wholesale & retail | 2021 |
| Galterud Utvikling AS | Real estate | 2019 |
| Galtesund AS | | 2026 |
| Galtor AS | Professional & scientific | 2025 |
| Galtung Holding AS | | 2021 |
| Galtvort AS | | 2024 |
| Gama Investments AS | Health & social care | 2022 |
| Gamba Eiendom AS | Real estate | 2021 |
| Gamba Holding AS | Professional & scientific | 2009 |
| Gamba Konsulenttjenester AS | Professional & scientific | 2020 |
| Gambit AS | Real estate | 1982 |
| Gambit Invest AS | Information & communication | 2013 |
| Gamco AS | Real estate | 2005 |
| Game AS | | 2021 |
| Game Changer Holding AS | | 2024 |
| Gameify AS | Other services | 2026 |
| Gamepartner AS | Arts & recreation | 1993 |
| Gameplan AS | Information & communication | 2023 |
| Gameplan Invest AS | | 2023 |
| Gamers Performance AS | Education | 2019 |
| Games People Play AS | Information & communication | 2020 |
| Games Workshop Limited Nuf | Wholesale & retail | 2001 |
| Gametime Ans | Administrative & support | 1999 |
| Gamez Publishing Nuf | Information & communication | 2007 |
| Gaminvest AS | | 2025 |
| Gamle Borgenvei 20 Invest AS | Real estate | 2008 |
| Gamle Brevik Togstasjon AS | Real estate | 2025 |
| Gamle Dalsveg 8B AS | | 2022 |
| Gamle Drammensvei 57 AS | Real estate | 2004 |
| Gamle Drammensvei 6 AS | Real estate | 2019 |
| Gamle Drammensvei 6 Holding AS | | 2022 |
| Gamle Fetvei 13 AS | Real estate | 1997 |
| Gamle Fetvei 9 AS | Real estate | 2019 |
| Gamle Forusvei 17-21 AS | Real estate | 2005 |
| Gamle Forusvei Invest AS | Real estate | 2012 |
| Gamle Furuset Eiendom AS | Real estate | 2016 |
| Gamle Isevei Eiendom AS | Real estate | 2012 |
| Gamle Kjelsåsvei 50 AS | Real estate | 1956 |
| Gamle Klinikk Toppetasjen AS | Health & social care | 2020 |
| Gamle Leirdals Vei 12 AS | Real estate | 2017 |
| Gamle Leirdalsvei 20 AS | Real estate | 1930 |
| Gamle Logen AS | Hospitality | 1988 |
| Gamle Oslo Backline Service AS | Arts & recreation | 2017 |
| Gamle Oslo Delikatesse AS | Wholesale & retail | 2016 |
| Gamle Oslo Eiendom AS | Real estate | 2020 |
| Gamle Oslo Gull Sølv & Mynter AS | Wholesale & retail | 2025 |
| Gamle Oslo Servicesentral AS | Administrative & support | 2006 |
| Gamle Oslo Tannklinikk AS | Health & social care | 2018 |
| Gamle Renna AS | Hospitality | 2017 |
| Gamle Ringeriksvei 32 AS | Real estate | 1968 |
| Gamle Ringeriksvei 47 AS | Real estate | 2015 |
| Gamle Ringeriksvei 61 AS | Real estate | 2005 |
| Gamle Strømsvei 45 B AS | Real estate | 2011 |
| Gamlebyen AS | Real estate | 2014 |
| Gamlebyen Blikk AS | Construction | 1991 |