John Doolittle Hardy (June 23, 1877 – October 20, 1921) was an American professional baseball player for nine seasons from 1903 to 1911.

Used principally as a catcher and outfielder, he played parts of four seasons in Major League Baseball for the Cleveland Naps, Chicago Cubs, and Washington Senators.

He also played several seasons in Minor League Baseball, appeared in a total 642 professional games.

[2] He spent the 1904 season with the Fort Wayne club, appearing in 115 games and compiling a .299 batting average.

[6] In late August 1907, after his strong showing in Nashville, Hardy joined the Chicago Cubs.

[9] Hardy concluded his professional baseball career with the Montreal Royals of the Eastern League.