	William Jennings Gardner (January 23, 1884 – June 15, 1965) was an American football player, coach, and law-enforcement agent. While working as a Prohibition agent in Chicago, Illinois, Gardner served with Eliot Ness's "Untouchables," a group of hand-picked federal agents who, from 1930 to 1932, sought to put an end to Al Capone's illegal empire. Although Gardner was only involved with the group for a short period of time, he would be prominently mentioned in Ness's memoir of the investigation, "The Untouchables", and inspire a recurring character in the 1959 television series based upon that book.