Plexippus ( other Greek: Πλήξιππος ) is a character of ancient Greek mythology from the Etolian cycle.
Plexippus was the son of Festius , king of Pleuron, and Eurythemy  . Together with many other heroes, he took part in the Calydonian hunt  and was killed by his nephew Meleager because of a debate about who will get the carcass of the killed boar  . There are alternative versions of the myth. According to one of them, Plexippus died at the hands of Meleager during the war between Pleuron and Calydon; according to another, he was in love with his nephew, out of jealousy offended Atalanta , and Meleager killed him for it.
Plexippus acts in the tragedy of Antiphon Meleager  .
- Pseudo-Apollodorus. Mythological library I 7, 10
- Ovid. Metamorphoses VIII 304; Gigin. Myths 173
- Pseudo-Apollodorus. Mythological library I 8, 3; Ovid. Metamorphoses VIII 440; Gigin. Myths 244; First Vatican mythograph II 44, 8
- Aristotle. Rhetoric II 2