East Turkestan Republic

East Turkestan Republic or East Turkistan Republic (ETR) may refer to the:


 * First East Turkestan Republic (1933–1934), Islamic republic centered around the city of Kashgar
 * Second East Turkestan Republic (1944–1946), Soviet-backed republic in northern Xinjiang
 * East Turkistan Government in Exile (2004–present), exile government based in the United States