Bir Lehlou (also transliterated Bir Lahlou, Bir Lehlu, Arabic: بير لحلو) is an oasis town in north-eastern Western Sahara, near the Mauritanian border and east of the border wall, in POLISARIO-held territory. It has a dispensary, a school and a mosque. It is the head of the 5th military region of the Sahrawi Arab Democratic Republic. It is also the name of a Daïra of the Wilaya of Smara, in the Sahrawi refugee camps.