The Israeli West Bank barrier, comprising the West Bank Wall and the West Bank fence, is a separation barrier built by Israel along the Green Line and inside parts of the West Bank. Israel describes the wall as a necessary security barrier against Palestinian political violence; whereas Palestinians describe it as an element of racial segregation and a representation of Israeli apartheid, who often call it "Wall of Apartheid". At a total length of 708 kilometres (440 mi) upon completion, the route traced by the barrier is more than double the length of the Green Line, with 15% of its length running along the Green Line or inside Israel, and the remaining 85% running as much as 18 kilometres (11 mi) inside the West Bank, effectively isolating about 9% of the land and approximately 25,000 Palestinians from the rest of the Palestinian territory.

A separation barrier or separation wall is a barrier, wall or fence, constructed to limit the movement of people across a certain line or border, or to separate peoples or cultures. A separation barrier that runs along an internationally recognized border is known as a border barrier.