Greenland
Danish krone (DKK)
Grenada
East Caribbean dollar (XCD)
Guam
US dollar (USD)
Guatemala
quetzal (GTQ), US dollar (USD), others allowed
Guernsey
Guernsey pound
note: the British pound is also legal tender
Guinea
Guinean franc (GNF)
Guinea-Bissau
Communaute Financiere Africaine franc (XOF); note -
responsible authority is the Central Bank of the West African States
Guyana
Guyanese dollar (GYD)
Haiti
gourde (HTG)
Holy See (Vatican City)
euro (EUR)