The 2017 Vulnerability Assessment of Syrian Refugees in Lebanon (VASyR) is the fifth annual survey assessing the situation of a representative sample of registered Syrian refugee households to identify situational changes and trends. With over one million registered refugees within its borders, Lebanon hosts the second-largest population of Syrian refugees in the region, and the highest per capita population in 2013, the VASyR has been an essential tool for partnership and for shaping planning decisions and programme design. It is the cornerstone for support and intervention in Lebanon.

In January 2015, the Government of Lebanon established restrictive border policies, followed by a freeze on registering refugees. Given these limitations, the number of registered Syrian refugees in Lebanon has dropped slightly, from 1.017 million in 2016 to 1.001 million in 2017.