Agios Stefanos or Hagios Stephanos is Greek for Saint Stephen. It may refer to:

• Agios Stefanos, Saravali, a village in the municipality of Patras near close to Saravali
• Agios Stefanos, Achaea, a village in the municipality of West Achaea, also known as Peristera (Olenia)
• Agios Stefanos, Attica, a suburb of Athens
• Agios Stefanos, Crete, a village in the municipality Ierapetra
• Agios Stefanos, Laconia
• Agios Stefanos, Mykonos, a beach on the island Mykonos
• Agios Stefanos, Phthiotis
• Agios Stefanos, Thinali, a village in the municipal unit of Thinali, North-East Corfu
• Agios Stefanos Avliotes, a beach/village in the municipal unit of Esperies, North-West Corfu

• The Greek name for Yeşilköy, a neighbourhood of Istanbul, Turkey

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