Kalininsk () is a town and the administrative center of Kalininsky District in Saratov Oblast, Russia, located on the Balanda River (Medveditsa's tributary), west of Saratov, the administrative center of the oblast. Population: .
It was founded in 1680 as the village of Balanda (), named so after the Balanda River, whose name in turn is possibly derived from a dialectal word indicating the river's windiness. In 1962, Balanda was granted town status and renamed Kalininsk after Mikhail Kalinin, a Bolshevik revolutionary and Soviet politician.
Within the framework of administrative divisions, Kalininsk serves as the administrative center of Kalininsky District, to which it is directly subordinated. As a municipal division, the town of Kalininsk is incorporated within Kalininsky Municipal District as Kalininsk Urban Settlement.