Kalbi Bak

Kalbi Bak is a village in Emamzadeh Hamzeh Ali Rural District of Boldaji District, Borujen County, Chaharmahal and Bakhtiari province, Iran.

Ethnicity
The village is populated by Lurs.

Population
At the time of the 2006 National Census, the village's population was 874 in 198 households. The following census in 2011 counted 889 people in 249 households. The 2016 census measured the population of the village as 838 people in 252 households. It was the most populous village in its rural district.