| Free AS | Professional & scientific | 2019 |
| Freeborn AS | Professional & scientific | 2017 |
| Freedog AS | Health & social care | 2018 |
| Freetech AS | Professional & scientific | 2026 |
| Fregatten Restaurant Da | Hospitality | 1980 |
| Fremtiden AS | Financial services | 2014 |
| Fresh Water Production AS | Water & waste | 2023 |
| Friends at Work AS | Real estate | 2018 |
| Frodeløkka Fysioterapi AS | Real estate | 2022 |
| Frontmaster AS | Construction | 2008 |
| Frontmaster Inneklima AS | Construction | 2008 |
| Froyet AS | Health & social care | 2026 |
| FTS AS | Hospitality | 2025 |
| FTS Transport AS | Transport & logistics | 2026 |
| Fulehuk AS | | 2024 |
| Full House AS | Arts & recreation | 2023 |
| Fun-D Invest AS | Arts & recreation | 2021 |
| Funksjonstast 13 Datahjelpen Da | Information & communication | 2001 |
| Furan AS | | 2022 |
| Furukollen Båthavn SA | Arts & recreation | 1985 |
| Furuseth Equity AS | | 2026 |
| Færd AS | Professional & scientific | 2005 |
| Færder Eiendomsservice AS | Administrative & support | 2020 |
| Færder Multiservice AS | Administrative & support | 2020 |
| Færder Nasjonalpark Hotell AS | Real estate | 2005 |
| Færder Poker Run AS | Administrative & support | 2023 |
| G F Inveco Norge AS | Real estate | 2003 |
| G Hagland AS | Real estate | 2021 |
| G Takst AS | Professional & scientific | 2012 |
| G.J. Solbo AS | Real estate | 2022 |
| Gallerii AS | Wholesale & retail | 2024 |
| Galmina Norway AS | Construction | 2023 |
| Gamingkontakten AS | Health & social care | 2020 |
| Gamle Bagler AS | Wholesale & retail | 2016 |
| Gammashift AS | Health & social care | 2025 |
| Gard Shipping AS | Transport & logistics | 2006 |
| Gargantua AS | Information & communication | 2004 |
| Gartner Gunnar AS | Administrative & support | 2022 |
| Gassprosjekter 3 AS | Professional & scientific | 2020 |
| Gastrolink Nuf | Administrative & support | 2021 |
| GCB Eiendom AS | Real estate | 2020 |
| GDM Spa | Manufacturing | 1999 |
| Geca Invest AS | | 2022 |
| Geitmyra Tønsberg Matkultursenter for Barn AS | Education | 2022 |
| Genesis Block AS | Real estate | 2018 |
| Gerdius AS | | 2023 |
| GFT AS | | 2025 |
| Ghassan Pizza AS | Hospitality | 2023 |
| GHH Invest AS | Real estate | 2019 |
| Gilja AS | Arts & recreation | 2007 |
| Gimleborg AS | | 2019 |
| Gitarsenteret AS | Wholesale & retail | 2014 |
| Gjermundsen Auto AS | Other services | 1964 |
| Gjervågåsen AS | Water & waste | 2009 |
| Gjest Holding AS | Real estate | 2017 |
| GK Berg AS | Professional & scientific | 2017 |
| GKL AS | Manufacturing | 2025 |
| Glad Consulting AS | Professional & scientific | 2020 |
| Glander International Bunkering (Norway) AS | Wholesale & retail | 1998 |
| Glanshjem AS | Administrative & support | 2026 |
| Glenair AS | Wholesale & retail | 2018 |
| Global Oslo AS | Real estate | 1981 |
| Gloppe Holding 2 AS | Wholesale & retail | 2023 |
| Gloppe Holding AS | | 2005 |
| Glow AS | Professional & scientific | 2016 |
| GM Plast A/S Nuf | Wholesale & retail | 1999 |
| Goactive Tønsberg AS | Arts & recreation | 2017 |
| Godt Hold AS | | 2020 |
| Good Game Shop AS | Wholesale & retail | 2024 |
| Gpfamily-Invest AS | | 2026 |
| GR8 EST8 AS | Real estate | 2019 |
| Gran Nelvik AS | Professional & scientific | 2019 |
| Gran Nelvik Holding AS | Professional & scientific | 2019 |
| Grand Apartment Tønsberg AS | Real estate | 1988 |
| Grandgården Mat Og Vinhus AS | Hospitality | 2012 |
| Grapefunk Wines AS | Wholesale & retail | 2019 |
| Green Development AS | Professional & scientific | 2010 |
| Green Mining AS | Professional & scientific | 1985 |
| Greenfield XP AS | Information & communication | 2022 |
| Greenfield XP Holding AS | Information & communication | 2021 |
| Greenhouse Communication AS | Professional & scientific | 2012 |
| Gregor Kummen AS | Professional & scientific | 2005 |
| Grepan AS | Real estate | 2021 |
| Grev Wedels Gate 6 AS | Real estate | 2024 |
| Grev Wedelsgate 10 Invest AS | Real estate | 2006 |
| Grevens Legekontor Da | Health & social care | 2010 |
| Grimstadhallen AS | Real estate | 1992 |
| Grinvest AS | Financial services | 2005 |
| Group.One Holding No AS | Information & communication | 2019 |
| Group.One Norway AS | Information & communication | 2001 |
| Gry Løvold Fotklinikk AS | Health & social care | 2012 |
| Grys Klipperi AS | Other services | 2014 |
| Grytnes Invest AS | Education | 2017 |
| Gråstein Holding AS | Other services | 2012 |
| Grønland 31 Drammen AS | Real estate | 2005 |
| Guiding Partner AS | Professional & scientific | 2025 |
| Gulag Holding AS | Real estate | 2022 |
| Gulag Takst & Eiendom AS | Real estate | 2023 |
| Gulbrandsens Ans | Hospitality | 1990 |
| Gull Invest AS | Wholesale & retail | 2005 |