Poronaysk (Russian:Порона́йск; Japanese:敷香, Shisuka; Ainu: Sistukari or Sisi Tukari) is a town and the administrative center of Poronaysky District of Sakhalin Oblast, Russia, located on the Poronay River 288 kilometers (179mi) north of Yuzhno-Sakhalinsk. Population: 16,120(2010 Census);17,954(2002 Census);25,971(**** Census).