In Greek mythology, Thestor (Ancient Greek: Θέστωρ) is a name that may refer to:
- Thestor, son of Idmon and Laothoe, grandson of Apollo; some say that Idmon ("the knowing") was his own surname.[1] By Polymela,[2] he was the father of Calchas,[3] Leucippe and Theonoe.[4]
- Thestor, a Trojan, who was killed by Ajax.[5]
- Thestor, another Trojan, brother of Satnius. They were sons of Enops and a Naiad nymph of the river Satnioeis. Thestor was slain by Patroclus, and Satnius by Ajax the Lesser.[6]
- Thestor, father of Alcmaon. His son fought at Troy and was killed with a spear by the Lycian leader Sarpedon .[7]