Shirgah District () is a former administrative division of Savadkuh County, Mazandaran province, Iran. Its capital was the city of Shirgah.
2013, the district was separated from the county in the establishment of North Savadkuh County.
At the time of the 2006 National Census, the district's population was 23,751 in 6,522 households. The following census in 2011 counted 23,409 people in 6,983 households.