Sura (Сура́) is a river in Russia, right tributary of Volga. It flows through Penza Oblast, Mordovia, Ulyanovsk Oblast, Chuvashia and Nizhny Novgorod Oblast.

Length 841 km, navigable for 394 km from the mouth.

The cities Penza, Alatyr , Shumerlya and Vasilsursk lie along the river Sura. The confluence with the Volga is in Vasilsursk.