John Clapp may refer to:
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John Clapp (artist), illustrator of children's books and professor
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John Clapp (baseball)
John Edgar Clapp (July 15, 1851December 18, 1904), nicknamed "Honest John", was an American professional baseball player-manager whose career spanned 12 seasons, 11 of which were spent with the Major League Baseball (MLB) Middletown Mansfields ( ...
(1851–1904), player and manager in Major League Baseball
{{Hndis, Clapp, John