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| Geilo Sales Agent AS | Geilo | 2025 |
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| Geiloark AS | Geilo | 2016 |
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| Gellein Management Consulting AS | Stavanger | 2005 |
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| Gemello AS | Lysaker | 2022 |
| Gemello Management AS | Lysaker | 2023 |
| Gemello Partners AS | Lysaker | 2023 |
| Gemeni AS | Tananger | 2019 |
| Geminali AS | Oslo | 1986 |
| Geminor Waste Treatment AS | Torvastad | 2011 |
| Geminox AS | Odda | 2023 |
| Gemit AS | Oslo | 1988 |
| Gemo-One AS | Stavanger | 2020 |
| Gemoil AS | Sandnes | 2014 |
| Gemsafe AS | Oslo | 2024 |
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| Geneever AS | Drammen | 2020 |
| Genemed AS | Oslo | 2023 |
| Genera Management AS | Oslo | 2025 |
| GENERA2R AS | Avaldsnes | 2021 |
| Generabo AS | Oslo | 2026 |
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| General Engineering D.O.O. | Ba-71000 Sarajevo-Novi Grad | 2025 |
| General Physics (UK) Ltd | Ec1A 2Dy London England | 2010 |
| Generation Event Og Management AS | Larkollen | 2019 |
| Generato AS | Oslo | 2015 |
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| Generator Digital AS | Kristiansand S | 2017 |
| Generator Installations AS | Oslo | 2024 |
| Genergy AS | Paradis | 2008 |
| Generis AS | Bryne | 2016 |
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| Generix Consulting AS | Drammen | 2025 |
| Generoc AS | Notodden | 2021 |
| Generos AS | Årnes | 2013 |
| Generteq GmbH | Ch-6340 Baar | 2019 |
| Geneseque AS | Trondheim | 2008 |
| Genesis AI AS | Oslo | 2023 |
| Genesis Holding AS | Tertnes | 2014 |
| Genesis Oil & Gas Consultants Ltd | Sandnes | 1996 |
| Genesys International B.V. | 1097Dp Amsterdam | 2017 |
| Genetec UK Limited | London Ed4A Tw England | 2025 |
| Genetic Analysis AS | Oslo | 2008 |
| Genetic Atomics Svalbard SA | Longyearbyen | 2020 |
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| Geni Holding AS | Oslo | 2007 |
| Geni Investment & Consultancy Nuf | Oslo | 2009 |
| Genialkraft Innovation AS | Løvenstad | 2024 |
| Genialt AS | Stavanger | 2014 |
| Geninova AS | Hamar | 2001 |
| Genix AS | Ankenes | 2022 |
| Gennema AS | Hamar | 2012 |
| Geno R&D AS | Hamar | 2008 |
| Genoa Holding AS | Stavanger | 2024 |
| Genofuel AS | Oslo | 2021 |
| Genomar Genetics AS | Oslo | 2015 |
| Genotec Holding AS | Oslo | 2021 |
| Genotype Analytics AS | Laksevåg | 2020 |
| Genpact Norway AS | Oslo | 2023 |