Adrastus, son of Daetor (436-389 BC) was a Sicel mercenary who was hired to serve in the Acragantine army of Philippos during his invasion of Sicily in 389 BC. He was among hundreds of Sicilian tribesmen who participated in Philippos' attack on Motya (Marsala), and he and many fellow Sicels were slain in battle with the Syracusan Greeks at the Battle of Ponte.