| Golhin AS | Manufacturing | 2019 |
| Golovin AS | | 2020 |
| Gon Holding AS | | 2024 |
| Good Vibez AS | Other services | 2018 |
| Gorgas AS | Professional & scientific | 2016 |
| Gossip Investering AS | | 2024 |
| Goto Hub AS | Information & communication | 2020 |
| Gotov Bad & Bygg AS | Construction | 2020 |
| Gowell Technology Norway AS | Administrative & support | 2025 |
| GPG Legedrift AS | Health & social care | 2021 |
| Grabben AS | Professional & scientific | 2006 |
| Grace & Blessing AS | Wholesale & retail | 2014 |
| Grace Asiatisk Butikk AS | Wholesale & retail | 2020 |
| Granberg Digital AS | Information & communication | 2025 |
| Granitt Miljø Da | Wholesale & retail | 2012 |
| Granmeisveien Invest AS | Real estate | 2022 |
| Graphic Solutions AS | Professional & scientific | 2026 |
| Grasrota AS | Real estate | 2006 |
| Grasrota Nordstein AS | Wholesale & retail | 2010 |
| Grato AS | | 2007 |
| Gravarsveien AS | Real estate | 2025 |
| Grayston AS | Professional & scientific | 2016 |
| Green Horizon AS | Information & communication | 2021 |
| Green Horizon Kviamarka AS | Information & communication | 2022 |
| Green Vanguard AS | Professional & scientific | 2022 |
| Green Velo Technologies AS | Professional & scientific | 2020 |
| Greencap Solutions AS | Professional & scientific | 2016 |
| Greensave AS | Wholesale & retail | 2012 |
| Greensave Investments AS | | 2022 |
| Greenshift AS | Professional & scientific | 2024 |
| Greenwitch AS | Manufacturing | 2025 |
| Grenseveien 19 II AS | Real estate | 2017 |
| Gress Holding AS | Real estate | 2023 |
| Gresspesialisten AS | Professional & scientific | 2024 |
| Grindheimsvåg Marina AS | Real estate | 2024 |
| Grip Management AS | Real estate | 2002 |
| GRK Holding AS | Construction | 2019 |
| Growit AS | Real estate | 2017 |
| Grundtvig Invest AS | Information & communication | 2025 |
| Grunnfjellet Eiendom AS | Real estate | 2007 |
| Gråtass AS | | 2000 |
| Grødem Allè Utbygging AS | Real estate | 2012 |
| Grønbil AS | Professional & scientific | 2024 |
| Grønn Hus AS | Construction | 2023 |
| Grønne Hjerter AS | Administrative & support | 2022 |
| Grønnesby AS | | 2024 |
| Grønnestad Hårdesign Storgt AS | Other services | 2001 |
| Grønntek Holding AS | Manufacturing | 2019 |
| Grønås Holding AS | | 2021 |
| Grøsfjeld Holding AS | | 2020 |
| Grøtteland Invest AS | | 2024 |
| GS Investering AS | | 2018 |
| GS Maskinutleie AS | Administrative & support | 2017 |
| GSG Assistanse AS | Professional & scientific | 2020 |
| GSL Holding AS | Real estate | 2012 |
| Gsoi AS | Professional & scientific | 2019 |
| GT Rent AS | Transport & logistics | 2024 |
| Gtba Embla AS | Wholesale & retail | 2022 |
| Gtba Forvaltning AS | Wholesale & retail | 2013 |
| Gti-Eiendom AS | Construction | 2024 |
| GTK AS | Professional & scientific | 2010 |
| GTK Completion AS | Professional & scientific | 2024 |
| GTR Eiendom AS | Real estate | 2009 |
| GTV AS | Real estate | 2005 |
| Gudmestad Transport AS | Transport & logistics | 2000 |
| Guide Eiendom AS | Real estate | 2000 |
| Gul International AS | Information & communication | 2008 |
| Gulco Holding AS | Wholesale & retail | 2021 |
| Gullestad Eiendom AS | Construction | 1988 |
| Gullestad Holding AS | Construction | 2005 |
| Gulv Og Tak AS | Construction | 1985 |
| Gulv Og Takbeleggkompaniet AS | Construction | 2005 |
| Gundersen Holding AS | Financial services | 2014 |
| Gunn E Holding AS | Financial services | 2017 |
| Gunn's Holding AS | Real estate | 2015 |
| Gus Holding AS | Financial services | 2005 |
| Gust Invest AS | | 2023 |
| Gustafsson Invest AS | Construction | 2013 |
| Gutech AS | Professional & scientific | 2017 |
| Gutermann AS | Wholesale & retail | 2024 |
| Gærgætt Investment | | 2022 |
| Gøy Holding AS | Real estate | 2011 |
| H Lode AS | Wholesale & retail | 2009 |
| H.A.H Invest AS | | 2026 |
| H.W Eiendom AS | Real estate | 2024 |
| H.W Invest AS | Health & social care | 2020 |
| H2 Equity AS | Real estate | 2024 |
| H2 Optimist AS | Wholesale & retail | 2005 |
| Haa Eiendom AS | Real estate | 2021 |
| Haabeth Invest AS | | 2022 |
| Haak Eiendom AS | Real estate | 2023 |
| Haakon 7S Gate 8 AS | Real estate | 2021 |
| Haast AS | | 2022 |
| Haba Holding AS | | 2021 |
| Habbestad Knusleri AS | | 2023 |
| Habbi AS | Real estate | 2000 |
| Habit AS | Construction | 2012 |
| Habitat for Fitness AS | Arts & recreation | 2020 |
| Hacienda Trading AS | Wholesale & retail | 2005 |
| Hafrak AS | Professional & scientific | 2019 |