In Greek mythology, Chrysippus (/kraɪˈsɪpəs, krɪ-/; Ancient Greek: Χρύσιππος, romanized: Khrúsippos, lit. 'golden horse') was a divine hero of Elis in the Peloponnesus peninsula (southern Greece), sometimes referred to as Chrysippus of Pisa. He is traditionally the son of Pelops by a nymph.

Chrysippus is notable for his abduction by Laius, prince of Thebes who was warmly received at Pisa and Pelops' court but became infatuated with Chrysippus due to his good looks. Laius' actions would result in Pelops' terrible curse being cast over him and his descendants. Chrysippus' life was eventually cut short by his jealous half-brothers who murdered him in cold blood.

Chrysippus was the bastard son of Pelops, king of Pisa in the Peloponnesus, and the nymph Axioche or Danais. In Hellanicus however he was a legitimate son from a previous marriage instead. He was half-brother to Atreus, Thyestes, Pittheus, Dias, Cynosurus, Corinthus, Hippalmus (or Hippalcimus), Hipassus, Cleon, Argeius, Alcathous, Aelius, Dimoetes, Troezen, Nicippe, Astydameia, and Lysidice. According to Pseudo-Plutarch, of all his children Pelops loved Chrysippus best.

The beautiful youth Chrysippus was kidnapped by the exiled Theban prince Laius, his tutor, who was escorting him to the Nemean Games, where the boy planned to compete. Instead, Laius carried him off to Thebes and there he raped him, a crime for which he, his city, and his family were later punished by the gods. Other ones named as Chrysippus' kidnapper include Zeus, and even Theseus. Laius was credited as the first man to introduce the love of nobleborn boys; this was supposedly the reason why the Thebans considered it a good thing to love the handsome, apparently not discouraged by Laius and Oedipus' fates.

In one version Chrysippus' father Pelops, following his son's abduction, cursed Laius to be killed by one of his own children. Pelops also waged a war against Laius in order to get his son back. In a different one Chrysippus' half-brothers Atreus and Thyestes caught Laius and retrieved Chrysippus, but Laius excused himself saying he had acted out of love so Pelops pardoned him. One late scholiast who cites Peisander (though possibly not the same as the Archaic poet) as his source claims that Chrysippus killed himself with his sword out of shame over what had transpired with Laius. A rare version, preserved in scholia and ancient art, bypasses the curse of Pelops entirely; from what can be extracted, the exposed infant Oedipus was adopted not by Polybus and Merope but Hippodamia and Pelops. Laius then abducted Oedipus' assumed brother Chrysippus, causing Oedipus to kill Laius. Another scholion suggests Oedipus also desired Chrysippus, and fought his father over their common desire.

Chrysippus' violation by Laius might have been the direct cause behind the Thebans' woes in the lost epic Oedipodea (the ancient poem that recounted the story of Oedipus), as far as it can be reconstructed based on other authors' testimonies. Hera, as the goddess of marriage, was enraged at Laius and his unlawful, contrary to traditional marriage, actions, and sent the terrible Sphinx to attack the Thebans in revenge for not punishing the impious Laius, while Oedipus' defeat of her did little to appease the goddess.

Chrysippus' death had many other variations. Hellanicus of Lesbos and Thucydides for example wrote that Chrysippus was murdered out of jealousy by Atreus and Thyestes, who cast him into a well. They usually act on their mother Hippodamia's suggestion, envious as she was of Pelops' love for Chrysippus and afraid that he was going to leave his kingdom to the boy. In one author, after Chrysippus' retrieval from Laius Hippodamia took matters in her own hands when her sons refused to involve themselves, and after stealing the sleeping Laius' sword, she thrusted it into Chrysippus' belly and left it there so that suspicion would fall upon Laius. Chrysippus however lived just long enough to reveal the truth with his dying breath.

Afterwards, no matter the direct culprit Pelops blamed Hippodamia for Chrysippus' demise, so she killed herself, or she withdrew to Midea in the Argolid, far away from Elis and Pelops. He also exiled his sons, and cursed them to have their descendants cause each other's perish, an anathema that came to be known as the curse of the Atreidae.