| Disputed island Native name: Ainu: エツ゚ヲロㇷ゚シㇼ | |
|---|---|
 Sentinel-2 image of Iturup (May 2023) | |
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  Iturup  Iturup | |
| Other names | Russian: Итуру́п; Japanese: 択捉島 |
| Geography | |
| Location | Sea of Okhotsk |
| Coordinates | 45°02′N 147°37′E / 45.033°N 147.617°E |
| Archipelago | Kuril Islands |
| Area | 3,139 km2 (1,212 sq mi) |
| Length | 200 km (120 mi) |
| Width | 27 km (16.8 mi) |
| Highest elevation | 1,634 m (5361 ft) |
| Highest point | Stokap |
| Administration | |
| Federal subject | Sakhalin Oblast |
| District | Kurilsky |
| Claimed by | |
| Prefecture | Hokkaido |
| Subprefecture | Nemuro |
| Demographics | |
| Population | 7,500 (2003) |
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Iturup (Russian: Итуру́п; Japanese: 択捉島), also historically known by other names, is an island in the Kuril Archipelago separating the Sea of Okhotsk from the North Pacific Ocean. The town of Kurilsk, administrative center of Kurilsky District, is located roughly midway along its western shore. Iturup is the largest and northernmost of the southern Kurils, ownership of which is disputed between Japan and Russia. It is located between Kunashiri 19 km (12 mi) to its southwest and Urup 37 km (23 mi) to its northeast. The Vries Strait between Iturup and Urup forms the Miyabe Line dividing the predominant plants of the Kurils.
The native inhabitants of the islands since at least the 14th century were the Ainu. Various European explorers passed the area over the years but settlement varied between Russian and Japanese. The island was formally claimed as Japanese territory in 1855. Near the end of the Second World War in 1945, the Soviet Union occupied the southern Kurils and forcibly removed its Japanese residents. Japan continues to claim the islands and considers the northern edge of the island to be its own northernmost point.