The Kondurcha (Russian: Кондурча; Tatar: Кондырча) is a river in Samara Oblast and Tatarstan, Russian Federation, a right-bank tributary of the river Sok. It is 294 kilometres (183 mi) long, of which 25 kilometres (16 mi) are in Tatarstan, and its drainage basin covers 4,360 square kilometres (1,680 sq mi). It begins in Samara Oblast and flows to the Sok in Samara Oblast.

Major tributaries are the Shlama and Lipovka rivers. The maximal mineralization 700-800 mg/L. Nurlat is along the river.

• Battle of the Kondurcha River