| Gerts Holding AS | Real estate | 2018 |
| Gfdc AS | Professional & scientific | 2014 |
| Gira AS | Wholesale & retail | 2019 |
| Gjedden AS | Financial services | 2005 |
| Gjellebæk AS | Water & waste | 2014 |
| Gjellebæk Elektro AS | Construction | 2025 |
| Gjerde Solutions AS | Professional & scientific | 2018 |
| Gjessing AS | | 2026 |
| Glacierfront AS | Information & communication | 2026 |
| Glassmester Odd Foss AS | Construction | 1991 |
| Glefs AS | Information & communication | 2005 |
| Global Partners AS | Professional & scientific | 1991 |
| Glommengata 69 AS | Real estate | 2013 |
| Glorioso Kjøtt Og Fisk AS | Hospitality | 2019 |
| Gmi AS | | 2023 |
| Gnilre Invest AS | Financial services | 2017 |
| Go There Software AS | Information & communication | 2026 |
| God Dag AS | Professional & scientific | 2010 |
| God Eiendom AS | Real estate | 2022 |
| Goda Invest AS | | 2021 |
| Gode Raad AS | | 2018 |
| Godt Fraspark AS | | 2024 |
| Godt Syn AS | Health & social care | 2024 |
| Godøya Utvikling AS | Real estate | 2022 |
| Gofoten Holding AS | | 2021 |
| Golden Peacock AS | Information & communication | 2022 |
| Golden Wick AS | Wholesale & retail | 2023 |
| Goliat Invest AS | Administrative & support | 1989 |
| Golvia Allservice | Construction | 1996 |
| Gora Invest AS | Real estate | 2008 |
| Goup Eiendom AS | Real estate | 2021 |
| Goup Holding AS | | 2021 |
| Gral AS | Real estate | 2014 |
| Gravitas Bygg AS | Construction | 2012 |
| Gravitas Maskin AS | Administrative & support | 2021 |
| Green Minds AS | Information & communication | 2024 |
| Greenspace E-Mobility Norge AS | Information & communication | 2025 |
| Grepstad Invest AS | | 2022 |
| Grette Holding AS | | 2025 |
| Grev Wedels Plass AS | Health & social care | 2012 |
| Grevnese AS | | 2021 |
| Greystone AS | Professional & scientific | 2017 |
| Grillgubbene Ans | Wholesale & retail | 2001 |
| Grimstad-Barth Holding AS | | 2026 |
| Grinde AS | Real estate | 2025 |
| Grinde Hto Holding AS | | 2026 |
| Grinzing Invest AS | Financial services | 1999 |
| Groa AS | Wholesale & retail | 2024 |
| Grynes AS | Other services | 2001 |
| Grytli Holding AS | | 2025 |
| GSF Invest AS | | 2022 |
| Guerrier AS | Professional & scientific | 2017 |
| Guideit AS | Information & communication | 2019 |
| Gulaco AS | Professional & scientific | 2005 |
| Guleto TM AS | | 2025 |
| Gulf Oil Marine Limited | Professional & scientific | 2016 |
| Gullbekk Industriservice AS | Manufacturing | 2014 |
| Gullhella Eiendom AS | | 2026 |
| Gullslottet AS | Wholesale & retail | 2026 |
| Gullsmed Frank Hellman AS | Wholesale & retail | 1980 |
| Gummi-Centralen Eiendom AS | Real estate | 1986 |
| Gunnar Knutsen Eiendom 2 AS | Real estate | 2007 |
| Gunnar Knutsen Holding AS | Real estate | 2007 |
| Gunnar Knutsen Invest AS | Real estate | 2007 |
| Gunnar Vartdal Holding AS | Financial services | 2015 |
| Gunnerød Holding AS | | 2025 |
| Gutta Krutt Eiendom AS | | 2021 |
| Gutta Krutt Holding AS | Construction | 2020 |
| H H Tangen AS | Financial services | 2016 |
| H&B Sensors AS | Wholesale & retail | 2025 |
| H&H Consulting AS | Professional & scientific | 2025 |
| H-Con AS | Professional & scientific | 2015 |
| H-Invent AS | Professional & scientific | 1992 |
| H.Brevig Invest AS | | 2026 |
| H2O Renhold AS | Professional & scientific | 2014 |
| H2RAAD AS | Professional & scientific | 2020 |
| Ha-Be AS | Wholesale & retail | 2016 |
| Haakon Skaaret Holding AS | Financial services | 2012 |
| Hafjell Delikatesse AS | Professional & scientific | 2015 |
| Hagelien Holding AS | Wholesale & retail | 2016 |
| Hagelien Invest AS | | 2020 |
| Hagen Data Consulting AS | Information & communication | 1995 |
| Haidary Holding AS | Transport & logistics | 2024 |
| Hair & There Asker AS | Other services | 1996 |
| Hair&Beauty Art AS | Other services | 2024 |
| Halka AS | Information & communication | 2012 |
| Halli AS | Information & communication | 2024 |
| Halseth-Berg Invest AS | Financial services | 2015 |
| Halvor Berg Agentur AS | Wholesale & retail | 2005 |
| Hammer & Haug Sports Service Da | Wholesale & retail | 1995 |
| Han AS | Professional & scientific | 2005 |
| Handelsbygg Invest 1 AS | Real estate | 2006 |
| Hanevold Barnegård AS | Education | 2008 |
| Hanevold Gartneri AS | Agriculture & fishing | 2005 |
| Hanne Louise Storås AS | Health & social care | 2024 |
| Hanne Ringdal Fysioterapi AS | Health & social care | 2025 |
| Hannibal Mngmnt AS | Education | 2024 |
| Hans Dahlseng AS | Health & social care | 2013 |
| Hansen & Olsen AS | Wholesale & retail | 2007 |
| Hansen Eiendomsutvikling AS | Real estate | 1986 |