The Mianwali District (Urdu: ضِلع مِيانوالى) is a district located in the Sargodha Division of the Punjab province of Pakistan. Mianwali District remained part of Rawalpindi Division until 1963, when Mianwali District became part of Sargodha Division. According to 2023 Pakistani census, population of Mianwali District is 1.79 million.
It has borders with the Talagang, Attock, Kohat, Karak, Lakki Marwat, Dera Ismail Khan, Bhakkar, and Khushab districts.