Silenus of Caleacte was a Greek historian of the Hellenistic period, active in the 3rd century BCE. His ethnonym indicates an origin in Caleacte, Sicily. He served as a court historian for King Hiero II of Syracuse.

No further biographical details survive. His known work is the Sikelika or Sicilian History, which exists only in fragments preserved by later authors. Silenus is significant as a contemporary historian of Hiero II's reign and the First Punic War.

His work was a major source for the Roman historian Coelius Antipater, who subsequently informed Livy’s account, thereby shaping the Roman historical tradition of the war. His pro-Hiero perspective is noted in source criticism, and his writing represents the continuation of local Greek historiography in the western Mediterranean.