Stara Zagora Province
Opan (, ) is a village in southern Bulgaria, part of Stara Zagora Province. It is the administrative centre of Opan Municipality, which lies in the southern part of Stara Zagora Province. The village is located south of the provincial capital of Stara Zagora, in the Upper Thracian Plain, the historical region of Thrace. The village was first mentioned in an Ottoman tax register of 1655.