(Παναίτωλος), an Aetolian in the service of Ptolemy Philopator, king of Egypt, who joined with his countryman Theodotus in betraying Coele-Syria into the hands of Antiochus III., and on the approach of the Syrian king surrendered into his hands the important city of Tyre. (Plb. 5.61,62.) From this time he held an important place in the service of Antiochus, and distinguished himself highly in the expedition of that monarch against Euthydemus, king of Bactria about B. C. 211. (Id. 10.49.)