Dzenzursky, Active stratovolcano in Kamchatka Peninsula, Russia.

Dzenzursky is a heavily eroded Pleistocene stratovolcano rising to 2,285 m in southern Kamchatka, westernmost of the Dzenzur-Zhupanovsky group. Its main cone has been carved by glaciers into an arc-shaped ridge running northwest, about 6 km long with two adjoining cones to the north and northeast. The summit crater, roughly 1 km across, is a glacial cirque partly filled with lava flows.

Dzenzur is a Pleistocene stratovolcano whose formation ended in the Upper Pleistocene. In the Holocene it renewed activity, producing extrusions and cinder cones on its eastern and northeastern slopes. No historical eruptions are known. Fumarolic activity was recorded in 1923 and 1957, and a mud-water pool 5 by 20 metres with water at 85–90 °C remains active in the southeastern part.

The volcano's name is shared with the Dzenzur and Kraevedskie hot springs lying near its slopes, which are among the features that draw visitors to this part of the Zhupanova river basin. The massif closes the Dzenzur-Zhupanovsky group of volcanoes on its western side, and the crater rim, partly filled with lava flows, is the landmark to look for on the ridge.

Dzenzursky lies in the southern part of Kamchatka, in the Dzenzur-Zhupanovsky group, within the "Volcanoes of Kamchatka" nature park, a UNESCO World Heritage site since 1996. The approach is over unmarked volcanic terrain with no facilities; the ground is covered with lavas, pyroclastics and glacial deposits. The only geothermal features are fumaroles and a 5×20 m mud-water pool at 85–90 °C on the southeastern flank, plus the Dzenzur and Kraevedcheskiye hot springs nearby.

The crater at the centre of Dzenzursky is about a kilometre wide and is in fact a glacial cirque, partly filled with lava flows. The massif's total length is 6 km, and a small lava dome sits on the north-eastern slope.