Chah Tus (Persian: چاه طوس, also Romanized as Chāh Ţūs and Chah Toos; also known as Chād Ţūs, Chātūs, and Shatū) is a village in Mahmeleh Rural District, Mahmeleh District, Khonj County, Fars Province, Iran. At the 2006 census, its population was 795, in 164 families.