Sarnitsa Municipality (Bulgarian: ÃÂñÃÂøýð áÃÂÃÂýøÃÂð) is one of the municipalities located in Pazardzhik Province. Its administrative centre is Sarnitsa. The municipality was established on 1 January 2015.
The municipality is located in the southern portion of the province. The total area is . It occupies an elongated area that is 34 km long from northwest to southeast and 6 to 8 km in width. It borders Velingrad Municipality in the north and Batak Municipality in the east. The Dospat Municipality of Smolyan Province is to the south-east, while Garmen and Satovcha municipalities of Blagoevgrad Province adjoin the region in the south-west.
There are only three communities with a permanent population: Sarnitsa, Pobit Kamak and Medeni Polyani, with only Sarnitsa being a town.
The population is around 4,617. The majority of the people in the municipality are Bulgarian-speaking Muslims.