The Louisiana Purchase was the acquisition of the Louisiana territory by the United States from France.

Louisiana Purchase may also refer to:

• Louisiana Purchase (musical), a 1940 musical about Louisiana politics
• Louisiana Purchase (film), a 1941 adaptation of the musical
• Louisiana Purchase, conservatives' name for a deal for Mary Landrieu's support of the Patient Protection and Affordable Care Act
• Louisianna Purchase (drag queen), American drag performer

• Louisiana Purchase Exposition, the Saint Louis World's Fair of 1904
• Louisiana Purchase State Park in Arkansas

This disambiguation page lists articles associated with the title Louisiana Purchase.
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