Chaerephon (; Ancient Greek: Χαιρεφῶν, Chairephōn; c. 470/460 – 403/399 BCE), of the Athenian deme Sphettus, was an ancient Greek best remembered as a loyal friend and follower of Socrates. He is known only through brief descriptions by classical writers and was "an unusual man by all accounts", though a man of loyal democratic values.