| Grønt Punkt Norge AS | Administrative & support | 1997 |
| Grønvik AS | Information & communication | 2026 |
| Grønvold AS | Professional & scientific | 2007 |
| Grønvold Eiendom AS | Real estate | 2007 |
| Grønvold Gård AS | Real estate | 1991 |
| Grønvold Gård Holding AS | Real estate | 2019 |
| Grønvold Maskinservice AS | Manufacturing | 1996 |
| Grønvoll Allé 18 AS | Real estate | 2019 |
| Grøten Invest AS | Financial services | 2013 |
| Grøtter Kapital Holding AS | | 2022 |
| Grøttumsbråtens Eftf. AS | Construction | 2016 |
| Grøvdal Kraft AS | Professional & scientific | 2007 |
| Grûner Gruppen AS | Wholesale & retail | 2004 |
| Grün-Bø Holding AS | | 2024 |
| Gründer Film & Coexista AS | Information & communication | 2015 |
| Gründerfabrikken AS | Information & communication | 2024 |
| Gründergarasjen AS | Professional & scientific | 2023 |
| Gründervekst AS | Professional & scientific | 2023 |
| Grünenthal Norway AS | Wholesale & retail | 2007 |
| Grüner Eiendom AS | Real estate | 2004 |
| Grünerløkka Brygghus AS | Manufacturing | 2019 |
| Grünerløkka Eiendomsmegling AS | Real estate | 2004 |
| Grünerløkka Flyttebyrå AS | Transport & logistics | 2016 |
| Grünerløkka Gastropub AS | Hospitality | 2019 |
| Grünerløkka Invest AS | | 2005 |
| Grünerløkka Kulturhus AS | Real estate | 1989 |
| Grünerløkka Legesenter AS | Health & social care | 2020 |
| Grünerløkkas Hus Tannlegesenter AS | Health & social care | 2014 |
| Grüners Gate 1 AS | Real estate | 2023 |
| Grünersgate 6 SNR 2 AS | Real estate | 2021 |
| Grünersgate 6 SNR 3 AS | Real estate | 2021 |
| GS Containerutleie AS | Water & waste | 1981 |
| GS Eiendom II AS | Real estate | 2013 |
| GS Eiendom III AS | Real estate | 2019 |
| GS Holding Invest AS | Hospitality | 2016 |
| GS Investment Group AS | Hospitality | 2019 |
| GS Prosjekt AS | Professional & scientific | 2017 |
| GS Tind AS | | 2026 |
| GS Tind Eiendom AS | Real estate | 2026 |
| GS Utvikling 1 AS | Real estate | 2021 |
| GS Utvikling AS | Real estate | 1997 |
| Gsbet AS | | 2019 |
| Gse Eiendom AS | Real estate | 2025 |
| GSG Handyman AS | Information & communication | 2023 |
| GSH AS | Professional & scientific | 2023 |
| GSH Invest AS | Financial services | 1983 |
| Gsi Investment AS | | 2024 |
| GSJ AS | Real estate | 2006 |
| GSK AS | Real estate | 2020 |
| GSM Entreprenør AS | Construction | 2024 |
| GSN Holding AS | | 2018 |
| GSP Holding AS | Real estate | 2008 |
| GSP Invest IV AS | Financial services | 2011 |
| GSP Invest V AS | Real estate | 2016 |
| GSP Invest Vi AS | | 2018 |
| GSR Holding AS | Real estate | 2008 |
| GSS AS | Administrative & support | 2010 |
| GSS Eiendom AS | Real estate | 2018 |
| GSS Invest AS | | 1993 |
| GSS Montering AS | Professional & scientific | 2023 |
| GSV 9 Prosjekt AS | Real estate | 2017 |
| GSV Tomt AS | Real estate | 2017 |
| GT 38 Invest AS | | 2019 |
| GT Asset Management AS | Professional & scientific | 2008 |
| GT Industrier AS | | 2019 |
| GT Investeringer AS | Real estate | 2021 |
| GT Investments AS | | 2021 |
| GT Logistikk AS | Transport & logistics | 2021 |
| GT Partner Invest AS | | 2023 |
| GT Utvikling AS | Real estate | 2013 |
| GTB Invest AS | | 2022 |
| Gtcr (Topaz) Acquisitionco AS | Administrative & support | 2020 |
| Gte Holding AS | | 2026 |
| GTF Holding Invest AS | Professional & scientific | 2025 |
| GTF Norge AS | Administrative & support | 2020 |
| GTG Nordic AB Nuf | Wholesale & retail | 2024 |
| GTH Utvikling AS | Real estate | 2022 |
| Gthold AS | | 2025 |
| Gti Holding AS | | 2025 |
| Gtinvest AS | Real estate | 2024 |
| GTJ AS | Information & communication | 2022 |
| GTJ Holding AS | Real estate | 2022 |
| GTR Invest AS | | 2020 |
| GTS Invest AS | Real estate | 2004 |
| GTS Network Ireland Ltd | Information & communication | 2001 |
| GTS Nordic Norway AS | Administrative & support | 2023 |
| GTS Property AS | Real estate | 2018 |
| Gtsi AS | Real estate | 2021 |
| GTT Norway Nuf | Information & communication | 2021 |
| Gture AS | Information & communication | 2025 |
| Gture Services AS | Information & communication | 2023 |
| GTX Holding AS | Real estate | 2015 |
| Guaca AS | | 2022 |
| Guahsof AS | Financial services | 2005 |
| Guanxi - It's Results That Matter AS | Professional & scientific | 2013 |
| Guapasfrit AS | | 2025 |
| Guard Hotell AS | Real estate | 1997 |
| Guard Invest AS | Information & communication | 2014 |
| Guardians of the Arctic AS | Professional & scientific | 2012 |
| Gubbelivet AS | | 2025 |