The Inva (Russian: Иньва) is a river in Perm Krai, Russia, a right tributary of the river Kama. It begins in the Upper Kama Upland near the border of Kirov oblast then flows through Komi-Permyak Okrug and into Kama Reservoir, forming Invensky Bay. The main tributaries are Velva and Kuva (left), Yusva (right).

The river is 257 kilometres (160 mi) long with a drainage basin of 5,920 square kilometres (2,290 sq mi). It is frozen from early November to late April. The town of Kudymkar is along the Inva River.

The name of the river is formed from the Komi-Permyak words “инь” (woman) and “ва” (water), which can be translated as “female water”.

• Inva in Great Soviet Encyclopedia