The Lone Star was an Amtrak passenger train that ran between Chicago and Houston, or Dallas via Kansas City, Wichita, Oklahoma City, and Fort Worth. The train was renamed from the Texas Chief, which the Atchison, Topeka and Santa Fe Railway had introduced in 1948. Amtrak discontinued the Lone Star in 1979.

The Texas Chief was a passenger train operated by the Atchison, Topeka and Santa Fe Railway between Chicago, Illinois, and Galveston, Texas. It was the first Santa Fe "Chief" outside the Chicago–Los Angeles routes. The Santa Fe conveyed the Texas Chief to Amtrak in 1971, which renamed it the Lone Star in 1974. The train was discontinued in 1979.