Sinarka (Russian: Синарка) is a stratovolcano located at the northern end of Shiashkotan Island, Kuril Islands, Russia. Most eruptions occurred during the 17th and 18th centuries, although there has be some recent activity, mostly steam and thermal activity. A large eruption would not effect large populations only 3 people are located within 10 km. The main structure of the volcano consists of the main peak, and two sub-peaks with a mellow ridge descending to the southwest.