The Pruzhonka (Russian: Пружёнка) is a river in Moscow Oblast, Russia. It is a left tributary of the Vorya. It is 31 kilometres (19 mi) long, and has a drainage basin of 117 square kilometres (45 sq mi). Source near the village of Petrovskoye, Shchyolkovsky District of Moscow Oblast. Flows all over on the south and south-east entering the Vorya near the village of Mizinovo.