John Palaiologos

John Palaiologos or Palaeologus (Greek: Ἱωάννης Παλαιολόγος) may refer to:

• John Palaiologos (brother of Michael VIII) (1225/30–1274), general, brother of Byzantine emperor Michael VIII
• John Palaiologos (son of Andronikos II) (1286–1307), governor of Thessalonica
• John Palaiologos (Caesar) (1288/89–1326), governor of Thessalonica
• John V Palaiologos (1332–1391), Byzantine emperor in 1341–1391, with interruptions
• John VII Palaiologos (1370–1408), Byzantine emperor in 1390
• John VIII Palaiologos (1392–1448), Byzantine emperor in 1425–1448
• John Theodore Paleologus (1611–???), possibly a descendant of Thomas Palaiologos, Despot of the Morea