Southwest Limited or
Southwestern Limited refers to several American passenger trains:
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Southwest Limited (Amtrak train) (1974–1984), a Chicago–Los Angeles train now known as the Southwest Chief
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Southwest Limited (Milwaukee Road train) (1903–1958), a Milwaukee Road train between Chicago and Kansas City
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Southwestern Limited (IC train) (1934–1967), an Illinois Central train between Meridian, Mississippi, and Shreveport, Louisiana
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Southwestern Limited (New York Central train) (1889–1966), a train between New York City and St. Louis
