Athens Airport (Greek: Αεροδρόμιο, Aerodromio), also known as Athens International Airport (Greek: Διεθνής Αερολιμένας Αθηνών, Diethnis Aerolimenas Athinon) on signage, is a train station that serves the international airport of Athens, Greece. It operates on both the Athens Suburban Railway as a well as Line 3 of the Athens Metro. It is the first and only train station in Greece that is not managed by GaiOSE, a subsidiary of OSE, the national rail company. It is owned by the airport, which charges the train operating companies (Hellenic Train and STASY) fees to use it.