The Siva (Russian: Сива) is a river in Udmurt Republic and Perm Krai in Russia, a right-bank tributary of the Kama.

[2] It starts in the Chastinsky District, near the village of Pikhtovka.

Its mouth is downstream of the dam of Votkinsk Hydroelectric Station.

The Siva freezes up in the second half of October and remains icebound until April.

This article related to a river in Russia is a stub.