French Polynesia
18 years of age; universal
Gabon
21 years of age; universal
Gambia, The
18 years of age; universal
Georgia
18 years of age; universal
Germany
18 years of age; universal
Ghana
18 years of age; universal
Gibraltar
18 years of age; universal, plus other UK subjects who
have been residents six months or more
Greece
18 years of age; universal and compulsory
Greenland
18 years of age; universal
Grenada
18 years of age; universal