Badreh (Persian: بدره) is a city in the Central District of Badreh County, Ilam province, Iran, serving as capital of both the county and the district. The city is populated by Kurds.

At the 2006 National Census, its population was 3,775 in 868 households, when it was in the former Badreh District of Darreh Shahr County. The following census in 2011 counted 4,249 people in 1,104 households. The latest census in 2016 showed a population of 4,278 people in 1,249 households, by which time the district had been separated from the county in the establishment of Badreh County, with Badreh as its capital.