In Greek mythology, Sinis () was a bandit killed by Theseus on his way to Athens.
Family Pseudo-Apollodorus describes Sinis as the son of Polypemon and Sylea, daughter of Corinthus;Apollodorus, 3.16.2Tripp, Edward. The Meridian Handbook of Classical Mythology. Meridian, 1970, p. 532. he has also been described as the son of Canethus and Henioche.Plutarch, Theseus 25.4-5 Bacchylides states that Poseidon was his father.18.19-21. He was the father of Perigune.
Mythology An Isthmian outlaw, Sinis would force travelers to help him bend pine trees to the ground and then unexpectedly let go, catapulting the victims through the air. Alternative sources say that he tied people to two pine trees that he bent down to the ground, then let the trees go, tearing his victims apart. This led to him being called Pityocamptes (, , "pine-bender").Powell, Barry B. Classical Myth. Sixth Edition. New York City: Pearson Education, Inc., 2009, p. 401-402.
Sinis was the second bandit to be killed by Theseus as the hero was traveling from Troezen to Athens, in the very same way that he had previously killed his own victims. Theseus then slept with Sinis's daughter, Perigune, who later bore Theseus's son, Melanippus. Perigune was then given by Theseus to Deioneus of Oechalia.Ovid, Metamorphoses 7.440
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