Chahar Taq (Persian: چهارطاق, also Romanized as Chahār Ţāq; also known as Chatak and Shamsābād-e Chahār Ţāq) is a village in Mohammadabad Rural District, in the Central District of Marvdasht County, Fars Province, Iran. At the 2006 census, its population was 662, in 149 families.