Germany
euro (EUR)
note: on 1 January 1999, the European Monetary Union introduced the
euro as a common currency to be used by financial institutions of
member countries; on 1 January 2002, the euro became the sole
currency for everyday transactions within the member countries
Ghana
cedi (GHC)
Gibraltar
Gibraltar pound (GIP)
Greece
euro (EUR)
note: on 1 January 1999, the European Monetary Union introduced the
euro as a common currency to be used by financial institutions of
member countries; on 1 January 2002, the euro became the sole
currency for everyday transactions within the member countries
Greenland
Danish krone (DKK)
Grenada
East Caribbean dollar (XCD)
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)