Opalchenie Peak (Bulgarian: връх Опълчение, romanized: vrah Opalchenie, IPA: [ˈvrɤx opɐɫˈt͡ʃɛniɛ]) is the peak rising to 4,503.5 metres (14,775 ft)[1] at the south extremity of the ice-covered Vinson Plateau, Sentinel Range in the Ellsworth Mountains, Antarctica.

The feature has a partly ice-free summit and south slopes, where two parallel ridges descend steeply southwestwards with Donnellan Glacier flowing in between and Mount Slaughter rising on the more southerly ridge.

[2] The northerly ridge was climbed up to the summit plateau by American Robert Anderson in November 1992, and subsequently used to establish a new route to Mount Vinson in 2003.

[3][4] Opalchenie Peak overlooks Vinson Plateau on the north, Craddock Massif on the southeast and upper Nimitz Glacier area on the southwest.

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.