Harry Corson Clarke (January 13, 1861 – March 3, 1923) was an American theatre actor and manager who played a single game of Major League baseball in 1889.

His grandfather Corson W. Clarke was also a noted actor, and the stage manager at Barnum's Museum.

He next played a season of repertoire with Maud Granger's company and then appeared in the initial production of Beauty at Wallack's Theatre, New York.

[2][3] In 1907 he began a series of years-long world-traveling tours, appearing on stage in Europe, Asia, Australia, and elsewhere.

[6] He was previously married to Alice Deming, of a wealthy San Francisco family, whom he divorced in 1904.