The Anuy (Russian: река́ Ану́й) is a left tributary of the Ob originating in the Altai Mountains of Siberia, Russia.

Flowing in a northwestern direction, it enters Altai Krai after about 40 kilometres (25 mi).

The Anuy exits the Altai mountains at an elevation of 250 metres (820 ft) and flows in a northeastern to eastern direction.

Near the village of Anuyskoye, the river takes a northern direction and joins the Ob west of Biysk at an elevation of about 150 metres (490 ft).

This article is based on a partial translation of the corresponding German web site from March 29, 2010.