Chahar Rustai (Persian: چهارروستايي, also Romanized as Chahār Rūstā’ī, Chahar Roosta’i, and Chehār Rustai; also known as Chāh Rūstā’ī and Chehār Rustar) is a village in Rudhaleh Rural District, Rig District, Ganaveh County, Bushehr Province, Iran. At the 2006 census, its population was 2,247, in 501 families.