| GH Holding AS | Real estate | 2005 |
| GHP Eiendom AS | | 2022 |
| Ghra AS | | 2024 |
| GHV Holding AS | Financial services | 2016 |
| Giallo AS | Financial services | 2007 |
| Gilbo AS | Professional & scientific | 2025 |
| Gildheim Boligeiendom 1 AS | Real estate | 2023 |
| Gildheim Eiendom AS | Real estate | 2022 |
| Gildheim Legesenter AS | Health & social care | 2024 |
| Gildheim Parkering AS | Transport & logistics | 2023 |
| Gildheimsvegen AS | Real estate | 2018 |
| Gildheimsveien 3 AS | Real estate | 2007 |
| Giljotin AS | Information & communication | 2010 |
| Gille AS | Wholesale & retail | 2007 |
| Gilli Invest AS | Real estate | 2006 |
| Gim AS | Real estate | 2021 |
| Gimse Eiendom Melhus AS | Real estate | 2013 |
| Gimsetoppen Bolig AS | Real estate | 2021 |
| Gimsøya Utvikling AS | Real estate | 2025 |
| Ginepro AS | Professional & scientific | 2026 |
| Gingerhero AS | | 2021 |
| Ginntech AS | Information & communication | 2023 |
| Gintel AS | Information & communication | 2001 |
| Gipsy AS | Hospitality | 2011 |
| Gisle Aasgaard Holding AS | | 2019 |
| Gisle Johnsons Gate 13B AS | Real estate | 2020 |
| Gisna AS | Real estate | 2008 |
| Gisvold Entreprises AS | Transport & logistics | 1988 |
| Githelp AS | Information & communication | 2023 |
| Gitse Holding AS | Financial services | 2016 |
| Gitte & Thomas AS | Professional & scientific | 2013 |
| Gittes Holding AS | Financial services | 2005 |
| Givn Holding AS | Information & communication | 2021 |
| Givn Norge AS | Information & communication | 2021 |
| Gjelhaugen AS | Real estate | 2011 |
| Gjellan Holding AS | | 2020 |
| Gjenbygg AS | Construction | 2013 |
| Gjerde Management AS | Professional & scientific | 2015 |
| Gjerdrum Invest AS | Real estate | 2020 |
| Gjernekapital AS | Financial services | 2024 |
| Gjervan AS | Construction | 2008 |
| Gjestvang Holding AS | | 2023 |
| Gjesvindt AS | Professional & scientific | 2024 |
| Gjetsund Holding AS | | 2021 |
| Gjevik Trafikkskole AS | Education | 1999 |
| Gjevilvasstølen AS | Real estate | 2009 |
| Gjøsvika Eiendom AS | Real estate | 2024 |
| GKG Holding AS | Real estate | 2012 |
| GKJ AS | Real estate | 2024 |
| GKV 53 AS | Real estate | 2017 |
| GL 3BYGG AS | Construction | 2008 |
| GL Eiendomsservice AS | Administrative & support | 2012 |
| GL Forvaltning AS | Financial services | 2012 |
| Glad Holding AS | | 2025 |
| Glad Inspiration AS | | 2024 |
| Glassmakeren AS | Construction | 1983 |
| Glassverket Næringsseksjon 51 AS | Real estate | 2022 |
| Glede Norway AS | Information & communication | 2020 |
| Gleden Da | Health & social care | 2006 |
| Glende Motorsport Service AS | Wholesale & retail | 2025 |
| Glensaxe Service Systems Norge AS | Administrative & support | 2015 |
| GLH Lade AS | Wholesale & retail | 2017 |
| Glider Holding AS | Real estate | 2022 |
| Glitterstad AS | Real estate | 2007 |
| Glo Holding AS | | 2022 |
| Global Green Energy AS | | 2010 |
| Global Products AS | Professional & scientific | 2008 |
| Global Products Invest AS | Professional & scientific | 2005 |
| Globetrotter Event & Artist AS | Professional & scientific | 2015 |
| Glyf AS | Professional & scientific | 2023 |
| Gløshaugen Byggservice AS | Construction | 2025 |
| Gløshaugen Legesenter AS | Health & social care | 2022 |
| GM Kapital AS | | 2026 |
| GM Management AS | | 2018 |
| Gma Invest AS | Financial services | 2009 |
| GMN 51 AS | Real estate | 2010 |
| GMN 52 AS | Real estate | 2010 |
| GMN 53 AS | Real estate | 2010 |
| GMN 6 AS | Real estate | 2009 |
| Gna Legetjenester AS | Health & social care | 2022 |
| Gnist Capital AS | | 2022 |
| Gnist Green AS | Professional & scientific | 2024 |
| Gnistr AS | Professional & scientific | 2019 |
| Gnitahei Holding AS | | 2024 |
| Go Oftedal AS | | 2025 |
| Go' Tur Holding AS | Real estate | 2011 |
| Go'Osten II Ans | Real estate | 2011 |
| Go'Osten Iiii Ans | Real estate | 2011 |
| Go-To Brands AS | Administrative & support | 2021 |
| Goa Invest AS | | 2014 |
| Goal Engineering AS | Professional & scientific | 1993 |
| Gob Invest AS | Real estate | 2006 |
| Gobi AS | Real estate | 1993 |
| Gobo Bolig AS | Real estate | 2025 |
| God Drikke AS | Hospitality | 2025 |
| God Pizza AS | Hospitality | 2013 |
| God Stemning Trondheim AS | | 2020 |
| God Stemning Trøndelag AS | Wholesale & retail | 2017 |
| Godhavn Eiendom AS | Real estate | 1991 |
| Godhavn Holding AS | Professional & scientific | 2021 |