The 1st Cossack Cavalry Division (German: 1. Kosaken-Kavallerie-Division) was a Russian Cossack division of the German Army that served during World War II. It was created on the Eastern Front mostly out of Don Cossacks already serving in the Wehrmacht, those who escaped from the advancing Red Army and Soviet POWs. In 1945, the division was transferred to the Waffen SS, becoming the 1st SS Cossack Cavalry Division (1. SS-Kosaken-Kavallerie-Division).