Crazy Horse (Indian name: Tashunca-Uitco) (1842?–1877), a chief of the Oglala Sioux Indians. He was a fearless fighter and a master strategist noted for his leadership at the Battle of the Little Bighorn in 1876. Indians led by Crazy Horse and Sitting Bull wiped out five companies of the 7th Cavalry under Lieutenant Colonel George A. Custer in the last great Indian victory on the Plains.

Crazy Horse was born in the Black Hills of South Dakota. He grew into an uncommonly able warrior with an intense hatred for the federal government's policy of placing Indians on reservations. He first gained prominence for his daring leadership in Red Cloud's War, 1866–68, where he won a significant victory over a force led by Captain William Fetterman.

After the Little Bighorn battle, Crazy Horse and his warriors were pursued by the U.S. Army and eventually surrendered in 1877. While being taken to a stockade, he attempted to escape and was mortally wounded.