Karaşar is a village in Ulaş District, in Sivas Province, Türkiye. Karaşar lies at 1,452 m above sea level, in the Deli Dağ mountains. It has 367 inhabitants. The nearest city is Sivas, 30 km to the northwest. Among the landmarks around are Gök Medrese (29 km), Kussara (33 km) and Great Mosque of Sivas (30 km).