| Gabrielsen & Olsen Eiendom AS | Manufacturing | 1962 |
| Gabrielsen & Partners AS | Real estate | 2005 |
| Gabrielsen & Partners Frogner AS | Real estate | 2013 |
| Gabrielsen & Partners Løkka AS | Real estate | 2019 |
| Gabrielsen Elektro AS | Construction | 2012 |
| Gabrielsen Og Olsen AS | Construction | 1982 |
| Gabs Beverage AS | Wholesale & retail | 2025 |
| Gacic Holding AS | Real estate | 2014 |
| Gad Consulting AS | | 2017 |
| Gada Byggeteknikk AS | Professional & scientific | 2022 |
| Gade Advisor AS | Professional & scientific | 2019 |
| Gade Advokatfirma AS | Professional & scientific | 2018 |
| Gade AS | Real estate | 2014 |
| Gaden Holding AS | | 2023 |
| Gadget Tracker AS | Information & communication | 2023 |
| Gadonga Invest AS | Wholesale & retail | 2014 |
| Gadus Genetics AS | Professional & scientific | 2021 |
| Gadus Industri AS | | 2017 |
| Gadus Kapital AS | Financial services | 2008 |
| Gadus LNG AS | | 2012 |
| Gaea Invest AS | | 2019 |
| Gaffa AS | | 2023 |
| Gaga Capital AS | Professional & scientific | 2021 |
| Gaga Holding AS | Agriculture & fishing | 2020 |
| Gagg AS | Financial services | 2006 |
| Gagl AS | | 2019 |
| Gagner AS | Professional & scientific | 2023 |
| Gah Eiendom AS | Hospitality | 2016 |
| Gaha Holding AS | | 2019 |
| Gahre AS | Real estate | 2020 |
| Gaia Barnehage AS | Education | 2022 |
| Gaia Eiendom Ans | Real estate | 2001 |
| Gaia Fund Managers Nordics Nuf | Professional & scientific | 2022 |
| Gaia Group Holding AS | Wholesale & retail | 2020 |
| Gaia Gruppen AS | Wholesale & retail | 2007 |
| Gaia Holding AS | Transport & logistics | 2005 |
| Gaia Impact AS | | 2022 |
| Gaia Invest AS | Real estate | 2007 |
| Gaia Investment AS | Information & communication | 2005 |
| Gaia Life AS | Education | 2020 |
| Gaia Media AS | Professional & scientific | 2024 |
| Gaia Portfolio AS | Real estate | 2023 |
| Gaia Ship Management AS | Transport & logistics | 1981 |
| Gaia Sun Systems AS | Real estate | 2022 |
| Gaia Tomteselskap AS | Real estate | 2021 |
| Gaia Wine & Spirits AS | Wholesale & retail | 2000 |
| Gaia World Collection AS | Wholesale & retail | 2009 |
| Gaiafjell AS | Wholesale & retail | 1995 |
| Gaiastova AS | Real estate | 2010 |
| Gaidaros Forlag AS | Information & communication | 1998 |
| Gain Holding AS | Financial services | 2005 |
| Gaining Ground AS | Professional & scientific | 2019 |
| Gainz Holding AS | | 2024 |
| Gainza Service AS | Construction | 2024 |
| Gait AS | Information & communication | 2016 |
| Gaitline AS | Wholesale & retail | 2012 |
| Gaius Inst AS | | 2025 |
| Gaja Proff AS | Administrative & support | 2017 |
| Gak Holding AS | Real estate | 2005 |
| Gala & Karl Invest Da | Administrative & support | 2002 |
| Gala Renhold Service AS | Administrative & support | 2016 |
| Galactico AS | | 2023 |
| Galant Forsikring AS | Financial services | 2017 |
| Galatea Invest AS | | 2019 |
| Galaxe Ans | Professional & scientific | 1991 |
| Galaxy Bislett AS | Hospitality | 2017 |
| Galaxy Capital AS | | 2025 |
| Galaxy Services Da | Transport & logistics | 2020 |
| Galculator AS | Real estate | 1995 |
| Gald Consulting AS | Information & communication | 2015 |
| Gald Holding AS | | 2025 |
| Galdeberget AS | Professional & scientific | 2025 |
| Galder Music AS | Information & communication | 2025 |
| Galderma Nordic AB Nuf | Wholesale & retail | 2000 |
| Galdhøpiggen Høyfjellshytter AS | Real estate | 2007 |
| Galdhøpiggen Invest 5 AS | Real estate | 2019 |
| Gale Force Norway AS | Professional & scientific | 2025 |
| Galeasen 5 AS | Real estate | 2013 |
| Galeonen SA | Professional & scientific | 2020 |
| Galet AS | Professional & scientific | 2023 |
| Galgeberg Auto AS | Hospitality | 2022 |
| Galgeberg Corner AS | | 2024 |
| Galgeberg Dagligvare AS | Wholesale & retail | 2023 |
| Galibier Consulting AS | Information & communication | 2017 |
| Galileo Aquarii AS | | 2024 |
| Galileo AS | | 2023 |
| Galileo Invest AS | Professional & scientific | 1990 |
| Galileo Ventures AS | | 2025 |
| Galinette AS | Real estate | 2008 |
| Galion AS | | 2023 |
| Galiè Da | Wholesale & retail | 2026 |
| Galla Holding AS | | 2019 |
| Gallagher Norway AS | Financial services | 2001 |
| Gallagher Re Nordic AS | Financial services | 2005 |
| Galleberg Bygg AS | Real estate | 2003 |
| Galleberg Eiendom AS | Real estate | 1951 |
| Galleberg Eiendom Flå AS | Real estate | 2009 |
| Galleberg Eiendom Holding AS | Real estate | 2017 |
| Galleberg Eiendomsutvikling AS | Real estate | 2024 |
| Galleberg Invest AS | Construction | 2021 |