Bedrift G - Nannestad
- Guldbakke
- Gulars AS
- Gardermoen Flyklubb
- Gulbrandsen Førstehjelpkonsult
- Gigernes Media
- Gutierrez-Mowinckel
- Granås Maskin AS
- Granås Maskin AS
- Gebreyohannes Transport
- Gardermoen Baptistmenighet
- Grabit Norge AS
- GM Utleie AS
- Gvn 4 AS
- Gvn 7 AS
- Gjermund Berntsen AS
- Green Tec AS
- Gentian Ndreca
- Gvn 5 AS
- Gardermoen Antirust AS
- Glimt Production Ungdomsbedrift
- Gardermoen Kristne Fellesskap
- Gunnar Arnesen Transport
- Glenn Hansen Transport
- Gro Øverland Håkenstad
- Gyldenberg Norway Holding
- Gullsmed Lars Elstad
- Granaas Julie Sandaunet
- Gardermoen Flyklubb Fueling AS
- Galewer Bygg Gorny
- Gehrke Trening og Helse
- Gli Activity Sture Mikalsen
- Gyldenberg Bygg & Prosjekt
- Gardermoen Elektro Vegard Haug
- Gardermoen Bed & Breakfast AS
- Gentex Eco Power Norway AS
- Golden Pizza & Kebab AS
- Gårdsterapi Arbeide/Bilde/Form. Jane Juul Kutzbach
- Gardermoen vest Næringspark D 14/15 AS
- Global Invest And Construction Holding AS
- Gardermoen Hotel, Bed & Breakfast