The Caspian tiger was a Panthera tigris tigris population native to eastern Turkey, northern Iran, Mesopotamia, the Caucasus around the Caspian Sea, Central Asia to northern Afghanistan and the Xinjiang region in western China. Wikipedia

An extinct tiger subspecies, Panthera tigris virgata, that had been recorded in the wild until the early 1970s, and formerly inhabited the sparse forest habitats and riverine corridors west and south of the Caspian Sea, from Turkey, Iran and west through Central Asia into the Taklamakan Desert of Xinjiang, China. Wiktionary

Extinct tiger. Wiktionary (translation)