| Gymbutikken Ila AS | Wholesale & retail | 2019 |
| Gymbutikken Sentrum AS | Wholesale & retail | 2016 |
| Gymer AS | Financial services | 2005 |
| Gymjerk AS | Wholesale & retail | 2021 |
| Gymnashop Norge AS | Wholesale & retail | 2018 |
| Gympark AS | Wholesale & retail | 2011 |
| Gymtimen AS | Health & social care | 2006 |
| Gyn Oslo AS | Health & social care | 1995 |
| Gyn Vikanes AS | Health & social care | 2022 |
| Gynekolog Elin Ødegaard AS | Health & social care | 2014 |
| Gynekolog Hilde Jørgensen AS | Health & social care | 2021 |
| Gynekolog Martin Andresen AS | Health & social care | 2020 |
| Gynekolog Merete Blakstad AS | Health & social care | 2005 |
| Gynekologene AS | Health & social care | 2015 |
| Gynekologi AS | Real estate | 1994 |
| Gynhelse AS | Health & social care | 2025 |
| Gynklinikk Nydalen AS | Health & social care | 2015 |
| Gynmeidell AS | Health & social care | 2022 |
| Gynoculus AS | Health & social care | 2017 |
| Gynova AS | Health & social care | 2018 |
| Gynt Film AS | Information & communication | 2025 |
| Gyntec AS | Health & social care | 2026 |
| Gyri Design AS | Professional & scientific | 2019 |
| Gyrianer AS | Professional & scientific | 2026 |
| Gystadparken Eiendom AS | Real estate | 2008 |
| Gytebekk AS | | 2026 |
| Gyvr AS | Information & communication | 2018 |
| GZ Invest AS | | 2023 |
| Glov Reklame AS | Professional & scientific | 1984 |
| Gresshoppa Sport A/S | Wholesale & retail | 1985 |
| Gullsmed Heyerdahl as | Wholesale & retail | 1988 |
| Gundersen & Løken Optikk AS | Wholesale & retail | 1899 |
| Gålåsholmen Infrastruktur AS | Real estate | 2020 |
| Gålåsholmen Infrastruktur Holding AS | Real estate | 2020 |
| Gåpå AS | | 2024 |
| Gården Schous Plass 1 AS | Real estate | 2005 |
| Gårdreform Snø Og Grønt AS | Administrative & support | 1992 |
| Gårdsand Eiendom AS | Real estate | 2018 |
| Gårdsforvaltning AS | Real estate | 1991 |
| Gårdsgutten AS | Real estate | 2021 |
| Gårdskraft II AS | Energy | 2025 |
| Gårdstorget AS | Wholesale & retail | 2026 |
| Gårdstunet Barnehage SA | Education | 1993 |
| Gåsevik Invest AS | | 2026 |
| Gåsland AS | Information & communication | 2012 |
| Gæste Gutter AS | Information & communication | 2024 |
| Göddecke Holzbau GmbH Nuf | Manufacturing | 2025 |
| Görlizer Park AS | Financial services | 2016 |
| Götalands El Och Telecom AB Nuf | Construction | 2026 |
| Göteborgs Spårvägar AB Norsk Avdeling Av Utenlandsk Foretak | Construction | 1997 |
| Gøbel Kurs- Og Konsulenttjenester AS | Information & communication | 2002 |
| Gøran Hansen AS | Information & communication | 2013 |
| Gøs Holding AS | Real estate | 2005 |
| Gøst AS | Financial services | 2005 |
| Gøteborggata 38 AS | Real estate | 2024 |
| Gøteborggata 8 B AS | Hospitality | 2014 |
| Gøteborgs Malerservice Da | Construction | 2003 |
| Gøtt AS | Wholesale & retail | 2024 |
| Gøyalt AS | Arts & recreation | 2013 |
| Gürrich-Holm Holding AS | | 2020 |
| Gürrich-Holm Invest AS | | 2022 |
| Gützkow AS | | 2023 |
| H & a Invest AS | Real estate | 2009 |
| H & H Distribusjon AS | Wholesale & retail | 2011 |
| H & H Holding AS | | 2025 |
| H & M Eiendom AS | Real estate | 2011 |
| H & M Hennes & Mauritz AS | Wholesale & retail | 1959 |
| H & MV Engineering AS | Professional & scientific | 2021 |
| H & S Eiendom AS | Real estate | 2007 |
| H 5 Eiendom AS | Real estate | 2017 |
| H A Brun AS | Manufacturing | 1911 |
| H A Neerbye AS | Wholesale & retail | 1965 |
| H a Skajems Planteskole AS | Agriculture & fishing | 1976 |
| H Andersen AS | | 2019 |
| H Astrup Invest AS | Financial services | 2015 |
| H Brustad Invest AS | Financial services | 2005 |
| H C Thauglands Trælastforretning AS | Wholesale & retail | 1913 |
| H Cap AS | Financial services | 2020 |
| H Capital AS | Professional & scientific | 2013 |
| H Capital Group AS | Real estate | 2015 |
| H D Jom Holding AS | | 2018 |
| H Dalsbø Holding AS | | 2025 |
| H E Søreide AS | Professional & scientific | 2016 |
| H Eiendom AS | Real estate | 1980 |
| H Ellingsen Holding AS | | 2025 |
| H F LS AS | Other services | 2021 |
| H G Wang AS | Wholesale & retail | 1968 |
| H Gilje Holding AS | | 2025 |
| H Hervåg AS | Professional & scientific | 1990 |
| H Holst-Berg AS | Real estate | 1993 |
| H J Larsen Eiendom AS | Real estate | 1990 |
| H Kjølner AS | Professional & scientific | 2023 |
| H Kollen AS | Financial services | 2018 |
| H L Montering Ans | Construction | 1990 |
| H M Hansens Eftf AS | Real estate | 1991 |
| H M Kristiansens Automobilbyrå AS | Transport & logistics | 2016 |
| H M Kristiansens Eiendomsselskap AS | Real estate | 2017 |
| H Mathisen Finans AS | Financial services | 1960 |
| H Matthew AS | Arts & recreation | 2022 |
| H Millennium Management AS | Real estate | 1999 |