Bir Tiguisit, Buir Tiguisit or Bir Tighissit (Arabic: بير تيغیسیت) is a locality located in the southern part of Saguia el-Hamra, in Western Sahara.

It is located south of Tifariti, near the border with Mauritania.

It is currently controlled by the Polisario Front, in the Liberated Territoriese.

The demining carried out by MINURSO has made this population revitalized.

Bir Tiguisit is located near the remains of the old Spanish colonial town of Colomina and one of the bases of MINURSO.