Deidamia or Deidameia (Greek: Δηϊδάμεια, Greek: ði.iˈða.mi.a) or Laodamia (Greek: Λαοδάμεια, [La.oˈða.mi.a]) (died c. 233 BC) was a Greek princess, daughter of Pyrrhus II of Epirus, king of Epirus. After the death of her father and that of her uncle Ptolemy, she was the last surviving representative of the royal Aeacid dynasty in Epirus. She had a sister, Nereis, who married Gelo of Syracuse. During a rebellion in Epirus her sister sent her 800 mercenaries from Gaul. Part of the Molossians supported her, and with the aid of the mercenaries she briefly took Ambracia.