Jattir was a town in the hill country of Judah and one of the cities given to the Aaronic priests.
David sent part of the spoil from his victory over the Amalekites to the inhabitants of Jattir. The town was assigned to the children of Aaron.
Jattir is identified with Khirbet Attir, an important ruin in the southern hill country, though the supplied material presents the identification as geographical evidence rather than certainty.