Mule train may refer to:Mule train (transport), a connected or unconnected line of mules, pulling or carrying cargo or riders "Mule Train", 1949 popular song written by Johnny Lange, Hy Heath, Doc Tommy Scott and Fred Glickman Mule Train (film), a 1950 Western film starring Gene Autry and Sheila Ryan Project Mule Train or Operation Mule Train, a United States Air Force operation in South Vietnam, from December 11, 1961 to December 8, 1962 The Mule Train, a protest caravan as part of Martin Luther King and Ralph Abernathy's Poor People's Campaign Mules (train), Amtrak trains formerly operating between St. Louis and Kansas City, Missouri