The Crazy Horse Memorial is a mountain monument complex that is under construction on privately held land in the Black Hills, in Custer County, South Dakota. It represents Crazy Horse, an Oglala Lakota warrior, riding a horse and pointing into the distance. The memorial was commissioned by Lakota elder Henry Standing Bear to be sculpted by Korczak Ziolkowski. It is operated by the Crazy Horse Memorial Foundation, a private non-profit organization.

The memorial consists of the mountain carving (monument), the Indian Museum of North America, and the Native American Cultural Center. The monument is being carved out of Thunderhead Mountain on land considered sacred by some Oglala Lakota, between Custer and Hill City, roughly 17 miles from Mount Rushmore.