Heraclius ( 575–641) was the Byzantine emperor from 610 to 641.

Heraclius may also refer to: Antipope Heraclius (fl. 309–310), antipope to Pope Eusebius Heraclius the Cynic (fl. 360s), Roman philosopher Heraclius (primicerius sacri cubiculi) (died 455), courtier of Emperor Valentinian III Heraclius of Edessa (d. 474), Byzantine general Heraclius, Bishop of Angoulême (d. 580) Heraclius the Elder (fl. 580s–610s), Armenian-born Byzantine general and exarch of Africa Heraclius Constantine (612–641), or Constantine III, Byzantine emperor in 641 Heraclius, better known as Heraclonas (626–642), Byzantine emperor in 641 Heraclius Constantine, better known as Constans II (630–668), Byzantine emperor from 641 to 668 Heraclius (son of Constans II), Byzantine co-emperor from 659 to 681 Heraclius (son of Constantine IV), Byzantine prince Heraclius (brother of Tiberius III) (fl. 698–705), Byzantine general Heraclius of Jerusalem (c. 1128–1190/1191), religious leader Heraclius I of Kakheti (1642–1709), Georgian king Heraclius II of Georgia (1720/1721–1798), Georgian king Heraclius Djabadary (1891 – 1937), Georgian classical composer

See also Heraclitus (disambiguation)