Olympias (c. 375–316 BC) was the fourth wife of Philip II of Macedon and mother of Alexander the Great.

Olympias may also refer to:

People Olympias II of Epirus, 3rd century BC queen and regent of Epirus Olympias of Thebes, Greek medical writer and midwife Olympias (Herodian) (), daughter of Herod the Great Olympias of Armenia (died 361), Christian Roman noblewoman, one of the wives of King Arsaces II (Arshak II) of Armenia Olympias (sister of Praetorian prefect Seleucus), Seleucus being the father of Olympias the Deaconess Olympias the Deaconess (ca. 361/368–408), Christian Roman saint and noblewoman, niece of Olympias of Armenia Olympias (daughter of Robert Guiscard), 11th-century fiancée of the Byzantine co-emperor Constantine Doukas

Sports teams Olympias Frenarou, a volleyball team based in Frenaros, Famagusta District, Cyprus Olympias Lympion, a football club based in Lympia, Cyprus A.E.P. Olympias Patras, a multi-sport club in Patras, Greece Olympias Patras B.C., a professional basketball club

Other uses Olympias (trireme), a reconstruction of an ancient Athenian trireme Olympias (Thessaly), a town in ancient Thessaly Olympias mine, in northern Greece Olympias, the moon of asteroid 317 Roxane