Cleonymus

Cleonymus or Kleonymos may refer to:
 * Cleonymus of Athens (fifth century BCE) Athenian general, cited by Aristophanes for his cowardice
 * Cleonymus (d. 371 BCE), son of great beauty of Sphodrias and aḯtas ("beloved") of King Archidamus III of Sparta
 * Cleonymus of Sparta (c. 340–c. 272 BCE) Spartan general and member of the royal family of the Agiads
 * Cleonymus of Phlius (fl. 229 BCE) tyrant of the city of Phlius who was convinced to resign his post by Aratus of Sicyon in 329 BC
 * Cleonymus (wasp), an insect genus in the family Pteromalidae