Sarnitsa (also transcribed Surnica, Bulgarian: Сърница [sɐrˈnit͡sɐ]) is a small town in the Pazardzhik Province, southern Bulgaria.

As of 2022[update] it had 3,511 inhabitants.

[1] Formerly a village, it gained its town status in September 2003[2] and since January 2015 has formed the administrative centre of the homonymous Sarnitsa Municipality.

Most inhabitants are ethnic Bulgarians and their main religion is Islam.

[2] That means that Sarnitsa is a predominantly Pomak settlement.