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

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

See also
 East Turkestan independence movement, in PRC-administered province of Xinjiang, popular among some Uyghur nationalists
 East Turkestan National Awakening Movement