Chahar Rustai (Persian: چهار روستايي) is a village in, and the capital of, Rudhaleh Rural District of Rig District, Ganaveh County, Bushehr province, Iran.

At the 2006 census, its population was 2,247 in 501 households. The following census in 2011 counted 2,505 people in 626 households. The latest census in 2016 showed a population of 2,365 people in 693 households. It was the most populous village in its rural district.