Asara District (Persian: بخش آسارا) is a district (bakhsh) in Karaj County, Alborz Province, Iran. At the 2006 census, its population was 18,856, in 5,407 families. The District has one city: Asara. The District has three rural districts (dehestan): Adaran Rural District, Asara Rural District, and Nesa Rural District.
Asara (Persian: آسارا, also Romanized as Āsārā) is a city in and the capital of Asara District, in Karaj County, Alborz Province, Iran. At the 2006 census, its population (including the amalgamated villages) was 1,030, in 282 families; Asara village alone had a population of 430, in 125 families.
The city of Asara was formed from the former villages of Asara, Rey Zamin, Sira, and Pol-e Khvab.