Stilpo (Stilpon), Greek philosopher of the Megarian school, was a contemporary of Theophrastus and Crates.

Intellectually in agreement with the Megarian dialectic, he followed the practical ethics of the Cynics both in theory and in practice. He extolled the Cynic airadda (loosely, self-control) as the principal virtue. Cicero (De fato, 5) describes him as a man of the highest character. Suidas attributes twenty dialogues to him, but of these no fragments remain.

Among his followers were Menedemus and Asclepiades, the leaders of the Eretrian school of philosophy. Seneca (Epistle 9) shows how closely allied Stilpo was to the Stoics.

This article incorporates text from the public domain 1911 Encyclopædia Britannica.