The Priz class (Project 1855) is a type of deep-submergence rescue vehicle (DSRV) operated by the government of Russia.

There are known to be at least five vessels of the class, several of which were involved in the failed rescue attempt when the submarine Kursk sank on 12 August 2000.

Capable of operating at depths up to 1,000 m (3,300 ft), they have a range of 21 nautical miles (39 km; 24 mi), at a top speed of 3.3 knots (6.1 km/h; 3.8 mph).

The Priz class is thought to be operable either crewed or uncrewed with a battery endurance of three hours.

Between 2006 and 2016, an upgrade of the class to improve its navigational, search and life-support ability was conducted.