Medieval Greece refers to geographic components of the area historically and modernly known as Greece, during the Middle Ages.

These include:

• Byzantine Greece (Early to High Middle Ages)
• Northern Greece under the First Bulgarian Empire
• various High Medieval Crusader states ("Frankish Greece") and Byzantine splinter states:
  • Latin Empire
  • Kingdom of Thessalonica
  • Principality of Achaea
  • Duchy of Athens
  • Despotate of Epirus
  • Despotate of the Morea
• Northern Greece under the Second Bulgarian Empire (Ivan Asen II of Bulgaria)
• Ottoman Greece (Late Middle Ages)