The Pruzhonka () is a river in Moscow Oblast, Russia. It is a left tributary of the Vorya. It is long, and has a drainage basin of . The source of the Pruzhonka is near the village of Petrovskoye, in Shchyolkovsky District of Moscow Oblast. The main direction of its flow is to the south and south-east, entering the Vorya near the village of Mizinovo.