Koryaksky or Koryakskaya Sopka (Russian: Коря́кская со́пка) is a volcano on the Kamchatka Peninsula in Russia's far east. It lies within sight of Kamchatka Krai's administrative center, Petropavlovsk-Kamchatsky. Together with neighbouring Avachinsky, it has been designated a Decade Volcano, worthy of particular study in light of its history of explosive eruptions and proximity to populated areas.