These days, as security arrangements change rapidly, visa requirements can also change. Please verify your needs directly with the local Greek consulate in your nation of origin. If you’re flying directly to Greece, your airline may also be able to tell you if a visa is required, but it is best to verify visa requirements for Greece with the Greek embassy or consulate in your country. This list from the Ministry of Foreign Affairs in Greece gives additional information, but please be aware that no website, however official, may be perfectly up to date.