Caspian can refer to:

• The Caspian Sea
• The Caspian region, the loosely-defined area surrounding the Caspian Sea
• The Caspian pony
• Caspian X or Prince Caspian, a fictional character in the Chronicles of Narnia series by C. S. Lewis
• Caspian, a fictional character on The Series
• CASPIAN, or Consumers Against Supermarket Privacy Invasion and Numbering, a grass-roots consumer organization
• Caspian, the post-rock band