The Chapayevka (Russian: Чапа́евка) is a river in Samara Oblast, Russia, a left tributary of the Volga.

It origins at the slope of Siny Syrt and flows to the Saratov Reservoir, near Novokuybyshevsk, Samara agglomeration.

In 1925 it was renamed Chapayevka in honor of the Russian Civil War Red Army combatant Vasily Chapayev.

[citation needed] Fossil remains of Triassic tetrapods are known in the river basin.

[2] In the summer of 2020, in the ravine, which flows into Chapayevka 0.8 km northeast of Orekhovka village, another location of Early Triassic fossils was discovered, composed of clays, bone-bearing sandstones and conglomerates.