The Ros is a river in Ukraine, a right tributary of the Dnieper. The river's source is located in the village of Ordyntsi in Vinnytsia Oblast. The Ros is 346 kilometres (215 mi) long, and has a drainage basin of 12,600 square kilometres (4,900 sq mi). The most important towns on the river are Bila Tserkva, Bohuslav, and Korsun-Shevchenkivskyi.