Zahran Alloush was a Syrian Islamist leader who was the commander of Jaysh al-Islam, a major component of the Islamic Front, of which he was the military chief, and was described as one of the most powerful persons in rebel-held Syria. He was killed in a joint Russian and Syrian airstrike on 25 December 2015 and was succeeded by Essam al-Buwaydhani as head of Jaysh al-Islam.

Jaysh al-Islam, formerly known as Liwa al-Islam, is a coalition of Islamist rebel units involved in the Syrian Civil War.