Guadeloupe
euro (EUR); French franc (FRF)

Guam
US dollar (USD)

Guatemala
quetzal (GTQ), US dollar (USD), others allowed

Guernsey
British pound (GBP); note - there is also a Guernsey pound

Guinea
Guinean franc (GNF)

Guinea-Bissau
Communaute Financiere Africaine franc (XOF); note -
responsible authority is the Central Bank of the West African
States; previously the Guinea-Bissau peso (GWP) was used

Guyana
Guyanese dollar (GYD)

Haiti
gourde (HTG)

Holy See (Vatican City)
euro (EUR)

Honduras
lempira (HNL)