Karnobat (Bulgarian: Карнобат) is a town in the Burgas Province, Southeastern Bulgaria. It is the administrative centre of the homonymous Karnobat Municipality. As of December 2009, the town has a population of 18,480 inhabitants.

Karnobat municipality is situated in the south-eastern part of Bulgaria, and it falls within the administrative boundaries of Burgas region. Rishki Passage links the municipality to north Bulgaria. The Karnobat-Aitos range of the Balkan Mountains is located in the northern part of the municipality. Hisar Hill raise to the south of the town of Karnobat. The territory of Karnobat municipality is 806 km² (311 sq mi), 87.37% of which is agricultural land, 9.81% forest land and 2.82% residential areas.

The Karnobat region, located in front of the south approaches of the Rishki and Varbishki passes, features an ancient history, dating back to the Neolithic era. Villages and tumuli reveal traces of life from the Neolithic and the Iron Age, rich settlement life during the antiquity and Middle Ages.