Flavius Silius Iavolenus (81-38 BC) was a Roman vigilus who served in Marcus Aemilius Lepidus' Legio II Alaudae during the Sicilian Revolt of the 1st century BC. In 38 BC, he took part in Marcus Atrius Sura's invasion of Sicily, and he was slain in battle with Octavian's Legio III Gemina at the Battle of Agrigentum.