| Gladengveien 2 AS | Real estate | 1928 |
| Gladengveien 8 Utvikling AS | Real estate | 2020 |
| Gladengveien 9 Holding AS | Real estate | 2025 |
| Gladengveien 9 Utvikling AS | Real estate | 2025 |
| Gladengveien Barnehage AS | Education | 2016 |
| Gladengveien Da | Real estate | 2006 |
| Gladengveien Utvikling AS | Real estate | 2011 |
| Gladius AS | Financial services | 2005 |
| Gladkokken AS | | 2026 |
| Gladkokken Mat Og Handel AS | Information & communication | 2017 |
| Glads Vei 20 AS | Real estate | 2005 |
| Glads Vei 24 AS | Financial services | 2001 |
| Glads Vei Invest AS | Real estate | 2022 |
| Gladstad Coaching AS | Education | 2022 |
| Gladstone Management AS | Professional & scientific | 2023 |
| Gladvoll AS | Real estate | 2005 |
| Gladvoll II AS | Real estate | 2007 |
| Glady AS | Construction | 2024 |
| Glam Clinic Hudpleie AS | Other services | 2021 |
| Glam House AS | Other services | 2023 |
| Glamira Norge AS | Wholesale & retail | 2017 |
| Glamjam AS | Wholesale & retail | 2025 |
| Glamora AS | Wholesale & retail | 2019 |
| Glamour Nails & Beauty AS | Other services | 2025 |
| Glaneren Vann- Og Avløpslag SA | Construction | 2024 |
| Glans Entrepenør AS | Construction | 2025 |
| Glanziz AS | Wholesale & retail | 2026 |
| Glas Eiendom AS | Real estate | 2017 |
| Glasmagasinet Ans | Real estate | 1989 |
| Glasmagasinet Stortorvet AS | Real estate | 1995 |
| Glass, Service Og Montasje AS | Construction | 2017 |
| Glass-Service Svendsen Og Sønn AS | Construction | 2018 |
| Glassmester Knut Furulund Eft AS | Construction | 1993 |
| Glassmester Svendsen AS | Construction | 2005 |
| Glasspaper Group AS | Administrative & support | 2000 |
| Glasspaper Learning AS | Education | 2013 |
| Glasspaper People AS | Administrative & support | 2013 |
| Glasspaper People Management AS | Administrative & support | 2021 |
| Glassverket Bolig AS | Real estate | 2016 |
| Glassverket Boligutvikling AS | Real estate | 2025 |
| Glattstrøm AS | | 2024 |
| Glaukomklinikken AS | Health & social care | 2017 |
| Glaukos Norway AS | Wholesale & retail | 2016 |
| Glawi Invest AS | | 2021 |
| Glaxosmithkline AS | Wholesale & retail | 1981 |
| Glaxosmithkline Consumer Healthcare | Wholesale & retail | 1997 |
| Glaxosmithkline Holding AS | Wholesale & retail | 1967 |
| Gledelig Holding AS | | 2020 |
| Gledelig Invest AS | Financial services | 2021 |
| Gleden Bakeri & Conditori AS | Manufacturing | 2022 |
| Gleden Invest AS | Professional & scientific | 2005 |
| Gledespil Da | Professional & scientific | 2000 |
| Gleditsch Holding AS | | 2021 |
| Gleff AS | Financial services | 2003 |
| Gleichmann Invest AS | | 2024 |
| Gleitbau GmbH | Professional & scientific | 1995 |
| Glekås AS | | 2021 |
| Glekås B AS | | 2022 |
| Glenbawn AS | | 2022 |
| Glencoe AS | | 2014 |
| Glencore Technology Pty Ltd. | Wholesale & retail | 2012 |
| Glende AS | Real estate | 2024 |
| Glendrange AS | Financial services | 2014 |
| Glendrange Invest AS | Financial services | 2015 |
| Gleng Eiendomsutvikling AS | Real estate | 2006 |
| Glenne Invest AS | Professional & scientific | 2006 |
| Glennwil Invest AS | | 1999 |
| Glesaaen Consult AS | Professional & scientific | 2011 |
| Glesnes Engineering Ltd Nuf | Professional & scientific | 2007 |
| Glhf Ventures AS | | 2026 |
| Glhpro AS | Education | 2026 |
| Glider Management Da | Professional & scientific | 2005 |
| Glidol Holding AS | Real estate | 2021 |
| Glidr AS | Information & communication | 2026 |
| Glimm AS | Wholesale & retail | 2024 |
| Glimmer AS | Professional & scientific | 1998 |
| Glimmerveien 16 AS | Real estate | 2017 |
| Glimmerveien 37 AS | Transport & logistics | 2009 |
| Glimmingegaard AS | | 2024 |
| Glimrende SA | Information & communication | 2015 |
| Glimt Invest AS | | 2024 |
| Glimt Legal AS | Professional & scientific | 2025 |
| Glimt Life AS | Other services | 2026 |
| Glint Solar AS | Information & communication | 2020 |
| Glitchware AS | Information & communication | 2026 |
| Glitni Consulting AS | Information & communication | 2021 |
| Glitra AS | Real estate | 1994 |
| Glitrafjord AS | Professional & scientific | 2009 |
| Glitrafjord Invest AS | Professional & scientific | 2020 |
| Glitre Holding AS | Wholesale & retail | 2017 |
| Glitre Invest AS | | 2020 |
| Glitre Rehabilitering AS | Real estate | 2012 |
| Glitre Zoo AS | Wholesale & retail | 2005 |
| Glitre Zoo Drift AS | Wholesale & retail | 2021 |
| Glitter and Glam AS | Wholesale & retail | 2021 |
| Glittertind Eiendom AS | Real estate | 2020 |
| Glittertind Eiendomsutvikling AS | Real estate | 2024 |
| Glittertind Infra AS | | 2025 |
| Glittertind Live AS | Arts & recreation | 2014 |
| Glittertinden Invest 3 AS | Real estate | 2018 |