东突厥斯坦
The flag of East Turkestan (), also known as the Kökbayraq ("sky flag"), was the national flag of the First East Turkestan Republic (1933-1934). The East Turkestan Flag has a white crescent (young waning moon) with a five pointed star on blue background, it was adopted on 12 November 1933 as the national flag of East Turkestan during Declaration of the Turkish Islamic Republic of East Turkestan. With the exception of the blue background, the flag is identical to the Flag of Turkey.