Otluk is a village in Şarkışla District, in Sivas Province, Türkiye. Otluk lies at 1,571 m above sea level, 0.4 km from the Ak Dağlar mountains. It has 79 inhabitants. The nearest city is Akdağmadeni, 27 km to the west. Among the landmarks around are Šamuḫa (29 km).