John Farrell
John Farrell may refer to:
;in sports
- John Farrell (manager), American Major League Baseball manager
- John Farrell (second baseman), American Major League Baseball infielder
- John Farrell (speed skater), American Olympic skater and coach
- John Farrell (hurler), Irish hurler
- John Farrell (sport shooter), New Zealand sports shooter
- Johnny Farrell, American golfer
- John Farrell (bishop), Canadian Roman Catholic bishop
- John Farrell (Australian poet), Australian journalist and poet
- John Farrell (poet), American poet and composer
- John Farrell (VC), Irish Victoria Cross winner
- John A. Farrell, American reporter, and biographer
- John H. Farrell, New York politician
- John S. Farrell, mayor of Green Bay, Wisconsin
- John J. Farrell, Dairy and Food Commissioner of Minnesota
- John J. Farrell (Irish [Parliamentary Party politician)], Irish politician and Lord Mayor of Dublin
- John Farrell (architect), New Zealand architect and politician