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| Galta Hageservice AS | Randaberg | 2024 |
| Gam-Invest AS | Bogen I Ofoten | 2021 |
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| Gamle Aarstad & Bjørnhaug Bemanning AS | Lillehammer | 2011 |
| Gamle Drammensvei 315 Ans | Asker | 2000 |
| Gamle Oslo Servicesentral AS | Oslo | 2006 |
| Gamlem Eiendom AS | Kråkerøy | 2015 |
| Gamme AS | Oslo | 2005 |
| Gamme Expeditions AS | Oslo | 2007 |
| Gammel Nok AS | Asker | 2012 |
| Gammel Nok Franchise AS | Asker | 2019 |
| Gammel Nok Holding AS | Asker | 2015 |
| Gammel Nok Omsorg AS | Asker | 2016 |
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| Gant Service AS | Bodø | 2015 |
| Garantert Renhold AS | Skien | 2023 |
| Garasje & Flyttevask AS | Hauge I Dalane | 2019 |
| Garasjevask AS | Oslo | 2002 |
| Garati AS | Kokstad | 2025 |
| Garcia Rengjoering Limited Nuf | His | 2009 |
| Gardermoen Eiendoms Service AS | Gardermoen | 2001 |
| Gardermoen Oslo Renhold Ltd Nuf | Nannestad | 2009 |
| Gardermoen Service AS | Gardermoen | 2019 |
| Gardermoenmessa AS | Tvedestrand | 2014 |
| Gardia AS | Finnsnes | 2005 |
| Gardian AS | Trondheim | 2018 |
| Gardlaus Maskin AS | Kolbu | 2021 |
| Gardsgut Toppe AS | Mjølkeråen | 2013 |
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| Garthe Grøntanlegg AS | Risør | 2017 |
| Gartnar Helleland AS | Oslo | 2018 |
| Gartner Gunnar AS | Tønsberg | 2022 |
| Gartner Jan AS | Tyristrand | 2015 |
| Gartner Johnsen AS | Heggedal | 2020 |
| Gartner'N AS | Skien | 2017 |
| GARTNER1 Thomas Tragethon AS | Rygge | 2022 |
| Gartnergaten Bygg Og Utleie AS | Bergen | 2018 |
| Gartnergeilo Holding AS | Geilo | 2022 |
| Gartnerhagen AS | Oslo | 1979 |
| Gartnerisk AS | Grimstad | 2025 |
| Gartnerringen AS | Nykirke | 2003 |
| Garuda Oslo AS | Oslo | 2009 |
| Garva AS | Grong | 2026 |
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| Gasmar AS | Oslo | 2014 |
| Gassendi Kredithantering KB | Oslo | 2006 |
| Gasser Felstechnik AG | Ch-6078 Lungern | 2019 |
| Gastrolink Nuf | Tønsberg | 2021 |
| Gasu Invest AS | Lillestrøm | 2006 |
| Gat AS | Hvam | 2016 |
| Gate Gourmet Switzerland GmbH | Ch-8152 Glattbrugg | 2009 |
| Gaula Sikkerhet AS | Støren | 2024 |
| Gaulak AS | Tofte | 2020 |
| Gauldal Utleie AS | Støren | 2023 |
| Gaupen Planter AS | Gaupen | 2019 |
| Gausdalsdagen AS | Østre Gausdal | 2022 |
| Gausetangen Amb AS | Nøtterøy | 2012 |
| Gausta Destinasjonsutvikling AS | Rjukan | 2025 |
| Gaute Lundberg AS | Skudeneshavn | 2020 |
| Gaute Vodal & Far AS | Auli | 2018 |
| Gautefallheia Hytteutleie AS | Treungen | 2017 |
| Gauvik Service AS | Kvernaland | 2023 |
| Gavekort AS | Oslo | 2005 |
| Gaveta Invest AS | Oslo | 2005 |
| Gavle Hyttefelt AS | Vossestrand | 2016 |
| Gazelle Global Consulting Limited | Gb - London W4 5Ya | 2014 |
| Gazoline Automobilbyrå AS | Vinterbro | 1998 |
| GB Consulting AS | Oslo | 2021 |
| GB Renhold AS | Frogner | 2026 |
| GB Services AS | Bergen | 2015 |
| GB Utleie AS | Soknedal | 2019 |
| GC Leasing Norway AS | Fornebu | 2005 |
| Gca Service AS | Oslo | 2019 |
| Gcri Norway Nuf | London W1B 5Dg | 2025 |
| GDC | Høvik | 2005 |
| Ge Measurement & Control France SAS | Fr-44303 Nantes Cedex 3 | 2013 |
| Ge Ultrashall Deutschland GmbH & Co KG | De-42655 Solingen | 2000 |
| Ge Vernova International LLC Filial Av Utenlandsk Foretak Nuf | Oslo | 1995 |
| Gear'D AS | Trondheim | 2018 |
| Gearhead Events AS | Hafrsfjord | 2017 |
| Geeks Esport AS | Halden | 2016 |
| Gefin NV Nuf | Be-1785 Merchtem | 2012 |
| Gegrag Eiendom AS | Kongsberg | 2009 |
| Geha Invest AS | Bergen | 2012 |
| Geilo Fjelltjenester AS | Geilo | 2026 |
| Geilo Hytte & Fritidsservice AS | Geilo | 2020 |
| Geilo Hytteservice AS | Geilo | 2024 |
| Geilo Mushing AS | Rødberg | 2025 |
| Geilo Renhold AS | Geilo | 2016 |
| Geilo Snøscooterbane AS | Geilo | 1997 |
| Geilo Taubane AS | Geilo | 2019 |
| Geilo Teltutleie AS | Geilo | 2017 |
| Geilo Tilhengerutleie Da | Geilo | 2007 |
| Geilolia Renhold AS | Geilo | 2025 |
| Geir Arne Komma AS | Kvelde | 2025 |
| Geir Bottolfs AS | Krøderen | 2020 |
| Geir Edland AS | Klepp Stasjon | 2025 |