| Gaga Trading AS | Professional & scientific | 2020 |
| Gagn AS | Professional & scientific | 2010 |
| Gagn Consulting AS | Professional & scientific | 2014 |
| Gah Invest AS | | 2005 |
| Game Over Da | Wholesale & retail | 2002 |
| Gamle Havstein AS | Transport & logistics | 2024 |
| Gammelseterlia 40 AS | Real estate | 2026 |
| Gandallf AS | Health & social care | 2025 |
| Gangstad Bygg AS | Construction | 2021 |
| Gangsyn AS | | 2017 |
| Garaløa AS | Hospitality | 2022 |
| Gardien Sports AS | Wholesale & retail | 2022 |
| Gardinbrygga AS | Real estate | 2024 |
| Gartner Norway AS | Transport & logistics | 2024 |
| Gaul Invest AS | Professional & scientific | 2024 |
| Gaupne Eigedom AS | Real estate | 2015 |
| Gaupne Rådhusvegen 3 AS | Real estate | 2024 |
| Gaviota AS | Professional & scientific | 2006 |
| Gb-Bygg AS | Construction | 2023 |
| Geba Invest AS | Manufacturing | 1992 |
| Geilane AS | Real estate | 2008 |
| Geirangerfjord Hydrogen AS | Professional & scientific | 2024 |
| General Aviation Investment AS | Financial services | 2015 |
| Generation Energy AS | Financial services | 2021 |
| Geo Equipment AS | Administrative & support | 2018 |
| Geo Solv AS | Wholesale & retail | 2022 |
| Geoc AS | Transport & logistics | 2023 |
| Geographic AS | Hospitality | 2014 |
| Geos Midco AS | Transport & logistics | 2022 |
| Geosmh AS | Transport & logistics | 2022 |
| Gerd C. Haagensen Advokatfirma AS | Professional & scientific | 2013 |
| Gevi Invest AS | | 2022 |
| Gfa Holding AS | Financial services | 2015 |
| GHC Fishing AS | Agriculture & fishing | 2011 |
| Ghost Fishing Solutions AS | Agriculture & fishing | 2023 |
| Gillesen Overseas & Co AS | Professional & scientific | 2005 |
| Ginga Holding AS | Construction | 2014 |
| Ginnungagap Holding AS | | 2022 |
| Giske Eiendom AS | Transport & logistics | 2005 |
| Giske Group Company AS | Transport & logistics | 2005 |
| Giske Hagen Consulting AS | | 2022 |
| Giske Logistics AS | Transport & logistics | 2004 |
| Giske Servicebase AS | Manufacturing | 2019 |
| Giske Shipping AS | Transport & logistics | 2004 |
| Gjallarhorn Holding AS | | 2026 |
| Gjelhola AS | Construction | 2017 |
| Gjenklang Studio AS | Information & communication | 2022 |
| Gjerde Kapital AS | | 2025 |
| Gjerdsvika AS | Real estate | 2023 |
| Gjethammer Invest AS | Wholesale & retail | 2010 |
| GJS Holding AS | Financial services | 2014 |
| Gjærde Gartneri Og Planteskole Ans | Agriculture & fishing | 2004 |
| Gjørtz Invest AS | | 2006 |
| Gjøsund Fiskerihavn AS | Real estate | 2023 |
| Gkab AS | Financial services | 2021 |
| Glamfrisør AS | Other services | 2018 |
| Glass & Ramme AS | Manufacturing | 2017 |
| Glasseriet Hauge AS | Manufacturing | 2006 |
| GLC Satcom AS | Information & communication | 2017 |
| Gleeson AS | Real estate | 2022 |
| Glimren AS | Administrative & support | 2023 |
| Glimt Art Mediation Da | Information & communication | 2024 |
| Global Fish AS | Manufacturing | 2012 |
| Global Sales AS | Wholesale & retail | 2018 |
| Global Salmon AS | Wholesale & retail | 2010 |
| Global Seafood AS | Wholesale & retail | 2013 |
| Global Shipbrokers AS | Transport & logistics | 2014 |
| Glocal Green AS | Manufacturing | 2020 |
| Glocal Green Energy AS | Professional & scientific | 2021 |
| GM Invest AS | Construction | 2023 |
| GM Renovation AS | Construction | 2023 |
| GMG Service AS | Other services | 1993 |
| GML Solutions AS | Professional & scientific | 2017 |
| Gneistr AS | | 2025 |
| Gnist AS | | 2005 |
| Gnist Utvikling AS | Education | 2025 |
| Goate Invest AS | | 2023 |
| God Omsorg AS | Health & social care | 2022 |
| God-Biten AS | Hospitality | 2013 |
| Godi Keller AS | Education | 2013 |
| Godt Tre AS | Construction | 2025 |
| Godø Og Røren AS | Real estate | 2019 |
| Gokart Utleie Ålesund AS | Administrative & support | 2019 |
| Golden Energy Offshore AS | Transport & logistics | 2013 |
| Golden Energy Offshore Group Chartering AS | Transport & logistics | 2012 |
| Golden Energy Offshore Group Holdings Norway AS | Transport & logistics | 2012 |
| Golden Energy Offshore Holdings (Norway) AS | Transport & logistics | 2006 |
| Golden Energy Offshore Management AS | Transport & logistics | 2010 |
| Golden Energy Offshore Services ASA | Transport & logistics | 2013 |
| Golden Nugget Invest AS | Information & communication | 2017 |
| Gotowly AS | Administrative & support | 2026 |
| Govind Bygg AS | Construction | 2021 |
| Grand Canyon Operation AS | Transport & logistics | 2014 |
| Granlia Eiendom AS | Real estate | 2008 |
| Granne Forsikring | Financial services | 1901 |
| Grapa Buss AS | Transport & logistics | 2018 |
| Green Group AS | Construction | 2017 |
| Green Services AS | Administrative & support | 1994 |
| Green Ålesund AS | Wholesale & retail | 2025 |
| Greenor Eiendom AS | Real estate | 2011 |