Sextus Numerius Blaesus was a Roman general who served as legatus of Octavian's Legio I Alaudae during the Sicilian Revolt and Antony's Civil War in the late 1st century BC. Blaesus was appointed to command the legion after Marcus Vipsanius Agrippa was wounded at the Battle of Thinisa in 38 BC, and he proceeded to lead the legion to victory over Lepidian armies at the Battle of Thuburbo and the Battle of Carthage in 37 BC. Blaesus, joined by Octavian and his Legio III Gemina, proceeded to sweep across North Africa and destroy the remnants of the Lepidian cause, before invading Ptolemaic Egypt at the start of Antony's Civil War in 35 BC.