Administrative divisions:

13 regions (perifereies, singular - perifereia) and 1 autonomous monastic state* (aftonomi monastiki politeia); Agion Oros* (Mount Athos), Anatoliki Makedonia kai Thraki (East Macedonia and Thrace), Attiki (Attica), Dytiki Ellada (West Greece), Dytiki Makedonia (West Macedonia), Ionia Nisia (Ionian Islands), Ipeiros (Epirus), Kentriki Makedonia (Central Macedonia), Kriti (Crete), Notio Aigaio (South Aegean), Peloponnisos (Peloponnese), Sterea Ellada (Central Greece), Thessalia (Thessaly), Voreio Aigaio (North Aegean)

Definition:

This entry gives the numbers, designatory terms, and first-order administrative divisions as approved by the US Board on Geographic Names (BGN). Changes that have been reported but not yet acted on by the BGN are noted. Geographic names conform to spellings approved by the BGN with the exception of the omission of diacritical marks and special characters.

Source: CIA World Factbook