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In Greek mythology, Macaria (Μακαρία) was, one of the Heraclidae, the daughter of Heracles and Deïanira. When Eurystheus, after the death of Heracles, made war upon the Heraclidae and their allies, the Athenians, an oracle declared that the descendants of Heracles would be victorious if one of them should devote himself to death. This lot Macaria voluntarily accepted, and the oracle was fulfilled in the success of the Athenians by whom Macaria was therefore held in great honour. A fountain at Marathon was called by her name (Pausan. i. 32).

She was in Heraclidae, a play by Euripides. She and her brothers and sisters hid from Eursytheus in Athens, ruled by King Demophon. As Eurystheus prepared to attack, an oracle told Demophon that he would win if and only if a noble woman was sacrificed to Persephone.

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