Eskiçubuk is a village in Gemerek District, in Sivas Province, Türkiye. Eskiçubuk lies at 1,189 m above sea level, 2.6 km from the İncebel Dağları mountains. It has 193 inhabitants. The nearest city is Şarkışla, 26 km to the northeast. Among the landmarks around are Şahruh Bridge (19.2 km). Among the natural features are Göksu Waterfall (19.5 km).