Firuzabad District () is in Kermanshah County, Kermanshah province, Iran. Its capital is the city of Halashi.
At the time of the 2006 National Census, the district's population was 24,849 in 5,219 households. The following census in 2011 counted 25,255 people in 5,925 households. The 2016 census measured the population of the district as 21,197 inhabitants in 5,635 households.