Vorona (Khopyor)

The Vorona (Ворона) is a river in the Penza, Tambov, and Voronezh oblasts in Russia. It is a right tributary of the Khopyor, and is 454 km long, with a drainage basin of 13200 km2. The average discharge at the mouth is 41.5 m3/s. The river is frozen over from the beginning of December to the first half of April. Its main tributary is the Chembar.

The towns of Kirsanov, Uvarovo, and Borisoglebsk are along the Vorona.