Deidamia may refer to:

• Deidamia (mythology), several figures in Greek mythology, including:
  • Deidamia (daughter of Lycomedes), in Greek mythology, a lover of Achilles
  • Deidamia (wife of Pirithous), also known as Hippodamia, abducted by the Centaurs in Greek mythology
• Deidamia I of Epirus, wife of Demetrius Poliorcetes in Ancient Greece
• Deidamia II of Epirus, last ruler of the Aeacid dynasty
• Deidamia (opera), by George Frideric Handel
• Deidamia, a former genus of crustaceans, now included in Willemoesia, family Polychelidae
• Deidamia (moth), a genus of insects in the family Sphingidae
• Deidamia (plant), a genus of flowering plants in the family Passifloraceae

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