Sus masst (s tefṛansist: Sous-Massa), d yiwet seg tnac n temnaḍin n temurt n Meṛṛuk. Tiweḍ tejumma ines 51,642 n km2. Tamaneɣt nnes d Agadir. Seg ugafa ines tella temnaḍt Marrakech Asfi, seg usamar tella tafilalt, seg unẓul tella dzayr, seg umalu yella Ugaraw Aṭlastik. Temnaḍt n Suss-masst, yiweḍ uṭṭun n yimezdaɣ ines g useggas n 2014, sin imelyan d 676 alef nnig n 7,9% n imezdaɣ n tmurt.