Bir Tiguisit, also known as Buir Tiguisit or Bir Tighissit, is a locality situated in the southern region of Saguia el-Hamra in Western Sahara. It is positioned south of Tifariti and lies near the border with Mauritania.
The area is currently under the control of the Polisario Front within the Liberated Territories. It serves as a notable geographical point in the southern reaches of the territory.