John Ely may refer to:

• John Ely (representative) (1774–1849), U.S. Representative from New York
• John Ely (general), (1816–1869), American Civil War General
• John Hart Ely (1938–2003), American legal scholar

This disambiguation page lists articles associated with the same personal name. If an internal link led you here, you may wish to change the link to point directly to the intended article.