Eli Whitney (1765–1825) was an American inventor and entrepreneur, best known for his cotton gin and his pursuit of interchangeability in firearms manufacture.

Eli Whitney may also refer to:

• Eli Whitney Jr. (1820–1825), son of the inventor, maker of the Colt Walker revolver
• Eli Whitney Museum in the U.S. state of Connecticut
• Eli Whitney, North Carolina, an unincorporated community in the U.S. state of North Carolina

See also

• His nephew Eli Whitney Blake, an inventor
• His grand-nephew Eli Whitney Blake, Jr., a scientist
• Eli Whitney Students Program at Yale College
• Elisha J. Whitney, a character in the Cole Porter musical Anything Goes

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