| Fotlandsvåg Maskinentreprenør AS | Vikanes | 1993 |
| Fourphase AS | Kokstad | 2012 |
| Foxdrill BV | 7570 Ah Oldenzaal | 1995 |
| Fram Energy AS | Stavanger | 1995 |
| Francon AS | Fitjar | 2023 |
| Franks International Ltd | Aberdeen Ab12 3Ly Sscotland | 1996 |
| Franzefoss Minerals AS | Rud | 2000 |
| Franzefoss Pukk AS | Rud | 2000 |
| Frimerts Grus Nuf | Sørli | 2011 |
| Frode Naustdal AS | Nordfjordeid | 2012 |
| Froland Holding AS | Froland | 2018 |
| Froland Stein Og Hellebrudd AS | Mjåvatn | 2006 |
| Frosta Torv AS | Frosta | 1999 |
| Frustøl Pukkverk AS | Kristiansand S | 2014 |
| Frøya Bergverk AS | Aukra | 2019 |
| Fugro Alluvial Offshore Limited | Oxfordshire Ox10 9Rb England | 1995 |
| Fugro B V | 2260 Ab Leidschendam | 1995 |
| Fugro GB (North) Marine Limited | Aberdeen Ab23 8Jw | 1995 |
| Fugro GB Limited | Oxfordshire Ox10 9Rb | 1995 |
| Fugro Geoservices Limited | Tr11 4Ta Cornwall | 1995 |
| Fugro Mcclelland Marine Geociences | Houston Tx 77274 | 1995 |
| Fugro SL Limited | Hertfordshire Hp3 9Rt | 1995 |
| Furukollen Pukk AS | Støren | 2019 |
| Future Pipe Industries BV Nuf | 7770 Ag Hardenberg | 2006 |
| Fuxite AS | Kautokeino | 1998 |
| G G Maskin AS | Spillum | 1990 |
| Gab Gesellschaft Zur Aufbereitung Von Baustoffen MBH | Oslo | 2007 |
| Gabbro Nor AS | Husby | 1995 |
| Galdor Exploration AS | Stavanger | 2026 |
| Galåen Grus AS | Os I Østerdalen | 2014 |
| Garpholmvika Stein AS | Havøysund | 2022 |
| Gas Turbine Efficiency AB | 175 62 Jyrfylla | 1999 |
| Gaular Pukk Og Sand AS | Sande I Sunnfjord | 2015 |
| Gaular Sand AS | Sande I Sunnfjord | 2012 |
| Gaular Stein Og Maskin AS | Sande I Sunnfjord | 2013 |
| Gausnes Grus AS | Ørskog | 2006 |
| GC Rieber Shipping AS | Bergen | 1990 |
| Ge Oil & Gas Inc | Houston Texas 77073 | 2004 |
| Geir Henning Skaret AS | Reinli | 2022 |
| Genesis Energies Norway AS | Sandnes | 2011 |
| Geo AS | Oslo | 2009 |
| Geo Caspian AS | Fosnavåg | 2008 |
| Geo Caspian Operation AS | Fosnavåg | 2013 |
| Geo Mining AS | Oslo | 2010 |
| Geo-Hoehenarbeit AG | Ch-9470 Buchs | 2019 |
| Geomodelling Services Limited | G3 6Aa Glasgow | 2013 |
| Geophysical Quality Services Limited | Lancashire L39 2Jn | 2008 |
| Georg Tveit AS | Sannidal | 1974 |
| George Alexander Geddes & Caley Fisheries (Peterhead) Ltd | Aberdeenshire Ab42 1Dl | 2014 |
| Geostart UK Limited | Solihull B93 8Lg Engalnd | 1997 |
| Geostrat Ltd | England | 1996 |
| Geowiz Consult Ltd | Norfolk Nr30 5Dl England | 2020 |
| Ges Oil Field Services Limited | Glenrothes Ky7 5Ns Scotland | 2023 |
| GGS Global Geo Sevices (UK) Nuf | Tonbridge Tn11 0Ld | 2024 |
| Ghana Fpso Operations AS | Lysaker | 2021 |
| GHG Nord AS | Vannvåg | 2009 |
| Giggs Oil and Gas Services AS | Bergen | 2016 |
| Gina Krog AS | Stavanger | 2016 |
| Gisna Gold AS | Vennesla | 2022 |
| Gjermundnes Naturmurstein AS | Vikebukt | 2010 |
| Gjølme Pukkverk AS | Stjørdal | 2022 |
| Gjørsli Steinindustri AS | Ingeberg | 2007 |
| GLD Technical Services Limited | Nottinghamshire Dn22 7Wp England | 2016 |
| Glis Eiendom AS | Etne | 2011 |
| Global Energy Solutions AS | Paradis | 2006 |
| Global Geo Services AS | Oslo | 2010 |
| Global Resource Management Limited Nuf | Ab21 7Gq Aberdeen Sc | 2010 |
| Glomar Minerals AS | Oslo | 2025 |
| GLT Anleggstjenester AS | Raufoss | 2002 |
| Glærum Kalksteingruve AS | Oslo | 1991 |
| GM Deepwater Consultancy AS | Skage I Namdalen | 2022 |
| Gmsg Limited | Guersney Gy Ghq Uk | 2007 |
| Gran Pukk AS | Brandbu | 1987 |
| Grand Canyon 2 AS | Fosnavåg | 2014 |
| Grand Canyon 3 AS | Fosnavåg | 2016 |
| Grand Canyon 3 KS | Fosnavåg | 2016 |
| Grand Canyon 3 Shipowning AS | Fosnavåg | 2026 |
| Grand Canyon Operation 2 AS | Fosnavåg | 2014 |
| Grand Canyon Operation 3 AS | Fosnavåg | 2016 |
| Grangex Sydvaranger AS | Oslo | 2023 |
| Granite Pukk AS | Langangen | 2017 |
| Granite Stein AS | Langangen | 2014 |
| Granvin Stein AS | Granvin | 2017 |
| Grasmo Grus Ans | Matrand | 2000 |
| Grasmo Næringspark AS | Matrand | 2018 |
| Green Marine | Fo-530 Fuglafjørdur | 2013 |
| Green Minerals AS | Oslo | 2020 |
| Grenland Sand & Grus AS | Skien | 2019 |
| Grimsbu Grus AS | Grimsbu | 1998 |
| Grimstad Sand AS | Grimstad | 1988 |
| Grong Pukkverk AS | Stjørdal | 1997 |
| Grorud Granitt Og Skifer AS | Oslo | 2002 |
| Grønnbakken Masseuttak AS | Harstad | 2023 |
| GS Fjell AS | Selbu | 2019 |
| GTH Grus & Pukk AS | Rendalen | 2020 |
| GTS Drilling Consulting AS | Trondheim | 2016 |
| Gudbrandsdal Pukk AS | Ringebu | 2011 |
| Gudbrandsdal Steinindustri AS | Tretten | 2013 |
| Gudvangen Stein AS | Gudvangen | 2022 |
| Gulfstream Services Inc | Houma La Ca 70363 | 2011 |