CSX Transportation is a United States railroad company.

CSX may also refer to:

• CSX Corporation, the above railroad system's parent company
• IATA code for Changsha Huanghua International Airport
• Cambodia Securities Exchange
• Shelby CSX, a limited-production performance automobile based on the Dodge Shadow
• Acura CSX, an entry-level luxury car from Acura, designed and sold in Canada
• Centre-left coalition, an alliance of political parties in Italy

This disambiguation page lists articles associated with the title CSX.
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