The Chukarska reka (Bulgarian: Чукарска река) is a 37 km long river in eastern Bulgaria that flows into Lake Burgas, which drains into the Black Sea.

[1] The river takes its source from the northern slope of the peak of Shumnoto Kale (376 m) in the Hisar Heights at an altitude of 325 m, about one kilometer west of the village of Chukarka.

It flows in direction southeast through the Burgas Plain in a wide valley covered with farmlands.

The lake itself drains into the Gulf of Burgas in the Black Sea.

It borders the basins of Aytoska reka to the northeast, the Rusokastrenska reka to the southeast, both flowing into the Black Sea, and shares a short boundary with the Tundzha basin to the northwest, the largest tributary of the Maritsa that belongs to the Aegean Sea drainage.