Klokotnitsa (Bulgarian: Клокотница) is a village in southern Bulgaria in the Haskovo Municipality.

The village is famous for the great battle on 9 March 1230 between the Bulgarian tsar Ivan Asen II and the Byzantine Greek ruler Theodore Komnenos Doukas.

To mark the victory, Tsar Ivan Asen II built the SS.

Forty Martyrs Church in Veliko Tarnovo and put a stone column in it.

Klokotnitsa Ridge on Trinity Peninsula, Antarctica is named after the village.