John "Jack" McCall (; 1852 or 1853 – March 1, 1877), also known as "Crooked Nose Jack" or "Broken Nose Jack", was the murderer of Old West legend Wild Bill Hickok, shooting him from behind while he played poker at Nuttal & Mann's Saloon in Deadwood, Dakota Territory on August 2, 1876. McCall was hanged on March 1, 1877.