Tsar Kaloyan Municipality (Bulgarian: Община Цар Калоян, former name Hlebarovo Municipality) is a small municipality (obshtina) in Razgrad Province, Northeastern Bulgaria, located in the Danubian Plain about 27 km southeast of Danube river. It is named after its administrative centre - the town of Tsar Kaloyan. The municipality embraces a territory of 186.42 km² with a population of 6,314 inhabitants, as of December 2009.