Chaqa Seyf ol Din () is a village in Chahar Cheshmeh Rural District of Kamareh District, Khomeyn County, Markazi province, Iran.
At the time of the 2006 National Census, the village's population was 854 in 221 households. The following census in 2011 counted 794 people in 232 households. The 2016 census measured the population of the village as 671 people in 217 households. It was the most populous village in its rural district.