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| Disputed island Native name: Ainu: クナシㇼ | |
|---|---|
 Map of Kunashir and the adjacent islands | |
 Location of Kunashir Island | |
  Kunashir Island  Kunashir Island | |
| Other names | Kazakh: Kün Ashyr; Japanese: 国後島 |
| Geography | |
| Location | Sea of Okhotsk |
| Coordinates | 44°07′N 145°51′E / 44.117°N 145.850°E |
| Archipelago | Kuril Islands |
| Area | 1,490 km2 (580 sq mi) |
| Length | 123 km (76.4 mi) |
| Width | 4 km (2.5 mi) to 30 km (19 mi) |
| Highest elevation | 1,819 m (5968 ft) |
| Highest point | Chacha |
| Administration | |
| Federal subject | Sakhalin Oblast |
| District | Yuzhno-Kurilsky |
| Claimed by | |
| Prefecture | Hokkaido |
| Subprefecture | Nemuro |
| Demographics | |
| Population | approx. 7000 (2007) |
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Kunashir Island (Russian: Кунаши́р, romanized: Kunashír; Japanese: 国後島, romanized: Kunashiri-tō; Ainu: クナシㇼ, romanized: Kunasir), possibly meaning Black Island or Grass Island in Ainu, is the southernmost island of the Kuril Archipelago. The island has been under Russian administration since the end of World War II, when Soviet forces took possession of the Kurils. It is claimed by Japan (see Kuril Islands dispute).