The article studies the ground stone tools found in the excavation of the Garamantian citadel of Aghram Nadharif, Libyan Sahara, Grinding stones are the most numerous class of artifacts collected from the site. The considerable quantity and variety of the material represent an important sample of chronologically homogeneous grinding equipment, allowing us to develop a complex typology, providing an insight into the wide range of functions performed by those tools in Garamantian times.