The currency in Greece is the Euro (EUR).
Changing your currency before you jet off couldn’t be easier! Purchase your travel money online, and it will be delivered to your door in a matter of days. Don’t have time to exchange your cash beforehand? You will find bureaus in most resorts and airports. Cards are accepted in the country’s larger resorts, while you may find that small local businesses prefer cash payments.
It’s handy to carry a credit card for any emergency expenses, but make sure you’re aware of any fees before you use it. You may also want to contact your provider to let them know you are going abroad in case they spot any suspicious or unusual foreign transactions.