In Greek mythology, Aristomachus (Ancient Greek: Ἀριστόμαχος, Ἀristómakhos) may refer to several figures including:

• Aristomachus, one of the sons of Talaus. He is the father of Hippomedon.^[1]
• Aristomachus, one of the Heracleidae, son of Cleodaeus, a great-grandson of Heracles. He led an attempt to capture Mycenae during the reign of Tisamenus, but, having misinterpreted the oracle, failed and fell in the battle.^[2] He is the father of Temenus, Cresphontes and Aristodemus.^[3]
• Aristomachus, one of the suitors of Hippodamia before Pelops, was killed by Oenomaus.^[4]