Gaetuli was the Romanised name of an ancient Berber tribe inhabiting Getulia, covering the desert region south of the Atlas Mountains, bordering the Sahara. Other sources place Getulia in pre-Roman times along the Mediterranean coasts of what is now Algeria and Tunisia, and north of the Atlas. The Zenatas are considered Gaetules.

Getulia was the name given to an ancient district in North Africa, which in the usage of Roman writers comprised the nomadic tribes of the southern slopes of Mount Aures and the Atlas, as far as the Atlantic, and the oases in the northern part of the Sahara. They were noted for the rearing of horses, and according to Strabo had 100,000 foals in a single year. They were clad in skins, lived on meat and milk, and the only manufacture connected with their name is that of the purple dye that became famous from the time of Augustus, and was made from the purple shellfish Murex brandaris found on the coast, apparently both in the Syrtes and on the Atlantic.