Hay'at Tahrir al-Sham, commonly referred to as Tahrir al-Sham, is a Sunni Islamist political and armed organisation involved in the Syrian Civil War. It was formed on 28 January 2017 as a merger between Jaysh al-Ahrar, Jabhat Fateh al-Sham (JFS), Ansar al-Din Front, Jaysh al-Sunna, Liwa al-Haqq, and Nour al-Din al-Zenki Movement. The unification process was held under the initiative of Abu Jaber Shaykh, an Islamist commander who had been the second Emir of Ahrar al-Sham.

The Syrian civil war is an ongoing multi-sided conflict in Syria involving various state-sponsored and non-state actors. In March 2011, popular discontent with the rule of Bashar al-Assad triggered large-scale protests and pro-democracy rallies across Syria, as part of the wider Arab Spring protests in the region. After months of crackdown by the government's security apparatus, various armed rebel groups such as the Free Syrian Army began forming across the country, marking the beginning of the Syrian insurgency. By mid-2012, the crisis had escalated into a full-blown civil war.