Faisalabad District (Lyallpur District until 1979) (Punjabi and Urdu: ضلع فیصل آباد) is one of the districts of Punjab, Pakistan. According to the 2023 census of Pakistan it had a population of 9,075,819, of which 3,691,999 were in Faisalabad City. It is the third largest city of Pakistan after Karachi and Lahore.
After the independence of Pakistan in 1947, the Muslim refugees from Eastern Punjab and Haryana settled in the Faisalabad District. It initially lacked industry, hospitals and universities. Since independence, there has been industrial growth, and the city's population is continually growing. Notable industry in the district include but not limited to Textile (spinning, weaving, printing, dying, stitching), Chemicals (acids, caustics, industrial gases, potash, chlorides, etc.), consumer goods (soaps, vegetable oil, detergents), Engineering (light electrical equipment, engineering goods), Metals & Metallurgy (steels, alloys) and Power (power equipment, power production).