Palangabad District () is in Eshtehard County, Alborz province, Iran. Its capital is the city of Palangabad.
In 2010, Karaj County was separated from Tehran province in the establishment of Alborz province.
In 2012, Eshtehard District was separated from the county in establishing Eshtehard County, which was divided into two districts of two rural districts each, with Eshtehard as its capital and only city at the time. The village of Palangabad was elevated to the status of a city in 2018.
At the time of the 2016 census, the district's population was 2,625 in 819 households.