Orestias may refer to:

• Orestiada, a town in the Evros regional unit, Greece
• the ancient Greek city of Orestias, now in Turkey
• Orestias (fish), a genus of South American fishes in the family Cyprinodontidae
• Orestias (plant), a genus of African plants in the family Orchidaceae

This disambiguation page lists articles associated with the title Orestias.
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