Cheremshansky District (Russian: Черемшанский райо́н; Tatar: Чирмешән районы) is an territorial administrative unit and municipality of the Republic of Tatarstan within the Russian Federation. The district is located in the south of the republic and occupies a total area of 1363,9 square kilometers (or 526.2 sq miles). According to the 2010 census, the municipality had a population of 20,361. The administrative center of the district, the “selo” (village) of Cheremshan accounts for 29.1% of the district's total population.