| Gravi AS | Kvaløya | 2020 |
| Graving & Uteanlegg AS | Moss | 2018 |
| Graving Og Banetjenester AS | Vinstra | 2020 |
| Graving Og Betong AS | Drøbak | 2023 |
| Graving Og Grunnarbeid AS | Askim | 2017 |
| Graving Og Sprenging AS | Torød | 2013 |
| Graving Og Transport AS | Vadsø | 2002 |
| Graving Og Transportutleie AS | Kongsvinger | 2014 |
| Graving Og Utleie AS | Dombås | 2020 |
| Graving Og Vedlikehold AS | Gressvik | 2022 |
| Graving Transport & Budbiltjeneste Preljevic AS | Klavestadhaugen | 2020 |
| Gravinord AS | Bjerkvik | 2015 |
| Gravitas Bygg AS | Asker | 2012 |
| Gravitek AS | Oslo | 2019 |
| Gravitek Holding AS | Oslo | 2019 |
| Gravlundservice AS | Mogreina | 2026 |
| Gravr AS | Stathelle | 2024 |
| Gravs Graveservice AS | Spydeberg | 2009 |
| Graværn AS | Råde | 2025 |
| Grbesa-Hansen Holdings AS | Rasta | 2022 |
| GRD Montasje AS | Oslo | 2013 |
| Great Group AS | Søgne | 2021 |
| Great Mur AS | Søgne | 2019 |
| Greb Bedachungen | 06928 Schweinitz | 2009 |
| Grebstad Holding AS | Lauvstad | 2005 |
| Green Anlegg AS | Solumsmoen | 2020 |
| Green Betong AS | Ås | 2022 |
| Green Bygg | Ee-51014 Tartumaa | 2018 |
| Green Bygg AS | Solumsmoen | 2008 |
| Green Fortune Norge AS | Hvam | 2013 |
| Green Group AS | Ålesund | 2017 |
| Green Hydrogen Tech AS | Narvik | 2015 |
| Green N Bygg AS | Oslo | 2024 |
| Green Rock AS | Bergen | 2011 |
| Green Solar AS | Langhus | 2022 |
| Green Technology AS | Lillestrøm | 2010 |
| Green Technology Concept | Ro-310183 Arad | 2017 |
| Greenbuddies, S.R.O. | Cz-140 00 Praha 4 | 2026 |
| Greene Machine AS | Voll | 2025 |
| Greenpaint AS | Stord | 2018 |
| Greenport Hellesylt AS | Hellesylt | 2022 |
| Greenrecycle AS | Arendal | 2026 |
| Greentec Houses Oü | Ee-75106 Harjumaa | 2017 |
| Grefsen Elektro AS | Hvitsten | 2006 |
| Grefsen Holding AS | Jessheim | 1988 |
| Grefsen Oppussing AS | Oslo | 2019 |
| Grefsen Vedlikehold AS | Jessheim | 1988 |
| Greg Isolering AS | Sperrebotn | 2025 |
| Gregersen Gulvstøp AS | Leknes | 2023 |
| Gregor Bygg AS | Bødalen | 2015 |
| Gregory Bygg AS | Slemmestad | 2011 |
| Greida AS | Sofiemyr | 2013 |
| Greipstad Bygg Ans | Nodeland | 1997 |
| Greivasta No Nuf | Svelvik | 2023 |
| Grendebygg AS | Blaker | 1998 |
| Grenland Anlegg Da | Skien | 2009 |
| Grenland Asfalt Og Maskintjenester AS | Skien | 2019 |
| Grenland Betong Og Armering Ans | Porsgrunn | 1994 |
| Grenland Betong Og Sanering AS | Langesund | 2022 |
| Grenland Betongsaging AS | Skien | 2007 |
| Grenland Blikkenslagerverksted AS | Porsgrunn | 2005 |
| Grenland Bygg AS | Skien | 2020 |
| Grenland Bygg Og Armering AS | Skien | 2020 |
| Grenland Drenering Og Anleggsgartnertjenester AS | Brevik | 2020 |
| Grenland Elektro AS | Porsgrunn | 1988 |
| Grenland Energispar AS | Porsgrunn | 2022 |
| Grenland Graveservice AS | Skien | 1998 |
| Grenland Holding AS | Porsgrunn | 2005 |
| Grenland Installasjon AS | Skien | 2021 |
| Grenland Maritime Elektro AS | Brevik | 2020 |
| Grenland Multifix Ans | Porsgrunn | 2006 |
| Grenland Sprengningsservice AS | Skien | 2000 |
| Grenland Steinlegging Og Hagearbeid AS | Skien | 2013 |
| Grenland Takservice AS | Porsgrunn | 2017 |
| Grenlands Gutta AS | Skien | 2026 |
| Grenrør AS | Skien | 2025 |
| Grens Rør & Servicetjenester AS | Oslo | 2015 |
| Grenstøl Gulv Og Maling AS | Tvedestrand | 2023 |
| Grepa AS | Hedalen | 2023 |
| Grepa Byggservice AS | Oslo | 2002 |
| Grepperud Holding AS | Hemnes | 2018 |
| Grepperud Snekkerservice AS | Hemnes | 2018 |
| Grepstad Holding AS | Sande I Sunnfjord | 2022 |
| Gresseth Holding AS | Hegra | 2024 |
| Gressvik Bygg&Eiendom AS | Gressvik | 2024 |
| Gressvik Elektriske AS | Gressvik | 2015 |
| Greve GmbH | 23936 Grevesmühlen | 2006 |
| Greve Snedkeren | Dk-2690 Karlslunde | 2015 |
| Grevlingen & Co AS | Spydeberg | 1998 |
| Grevstad & Tvedt VVS AS | Bergen | 2017 |
| Greyhill Invest AS | Flekkerøy | 2021 |
| Greåker Glass Og Rammeforretning AS | Greåker | 2003 |
| Greåker Graving Og Transport AS | Greåker | 2008 |
| Greåker Holding AS | Greåker | 2008 |
| GRG Fjell & Anlegg AS | Steinkjer | 2026 |
| Grid Solutions OY | Fi-33730 Tampere | 2015 |
| Grid Solutions SAS | 91300 Massy | 2010 |
| Gridseth Rør AS | Sunndalsøra | 1993 |
| Gridtech AS | Beisfjord | 2026 |
| Griff Entreprenør AS | Trondheim | 2019 |