Greece:
drachma (GRD); euro (EUR)
note: on 1 January 1999, the EU introduced the euro as a common currency that is now being used by financial institutions in Greece (which entered the European Monetary Union on 1 January 2001) at a fixed rate of 340.750 drachmae per euro and will replace the local currency for all transactions in 2002
Greenland:
Danish krone (DKK)
Grenada:
East Caribbean dollar (XCD)
Guadeloupe:
French franc (FRF); euro (EUR)
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