John Doukas (disambiguation)
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John Doukas or John Ducas (Greek: Ιωάννης Δούκας, Iōannēs Doukas) is the name of several members of the Doukas, Komnenos, and Angelos families and their descendants. It may refer to any of the following:
- John Doukas, Caesar, brother of Emperor Constantine X Doukas
- John Doukas, sebastokratōr, cousin of Emperors Isaac II Angelos and Alexios III Angelos
- John Ducas (general) military figure under Emperor Manuel Comnenus.
- John Komnenos Doukas, ruler of Thessalonica
- John I Doukas, ruler of Thessaly
- John II Doukas, ruler of Thessaly
- John II Orsini (also called Doukas), ruler of Epirus
- John Uroš Doukas Palaiologos, ruler of Thessaly