Zhrebchevo Reservoir (Bulgarian: Язовир Жребчево) is a large dam and reservoir in central Bulgaria, situated between the Sub-Balkan valleys of Kazanlak and Tvarditsa that lie between the Balkan Mountains to the north and the Sredna Gora mountain range to the south.

Close to its shores are the towns of Gurkovo and Nikolaevo, as well as the villages of Panicherevo, Banya, and Asenovets.

[2][3] Its main purpose is to level the river discharge and to provide water for irrigation in the northeastern parts of the Upper Thracian Plain, as well as to the Sliven Valley and Yambol Field.

In its northeastern part are located the semi-submerged ruins of the 19th century Church of St John of Rila, the only remaining structure of Zapalnya.

[6] Due to its irregular shape, the reservoir has many arms and inlets with convenient fishing spots.