Gaius Cestius Gallus (d. 67 AD) was the son of a consul in ancient Rome and himself a suffect consul in 42.
He was legate of Syria from 63 or 65. He marched into Judea in 66 in an attempt to restore calm at the outset of the Great Jewish Revolt. He succeeded in conquering Beit She'arim in the Lower Galilee, seat of the Great Sanhedrin (Jewish supreme religious court) in later times, but was unable to take The Temple Mount.
During his withdrawal to the coast his army was ambushed near Beth Horon, and only succeeded in making good his escape to Antioch by sacrificing the greater part of his army and a large amount of war material.
Soon after his return Gallus died (before the spring of 67), and was succeeded in the governorship by Licinius Mucianus. Emperor Nero appointed General Vespasian, the future Emperor, instead to crush the rebellion.