William Henry "Harry" Wright was an American professional baseball player, manager, and developer. He assembled, managed, and played center field for baseball's first fully professional team, the 1869 Cincinnati Red Stockings. He is credited with introducing innovations such as backing up infield plays from the outfield and shifting defensive alignments based on hitters' tendencies. For his contributions as a manager and developer of the game, he was inducted into the Baseball Hall of Fame in 1953 by the Veterans Committee.

The Cincinnati Red Stockings of 1869 were baseball's first all-professional team, with ten salaried players. The Cincinnati Base Ball Club formed in 1866 and fielded competitive teams in the National Association of Base Ball Players (NABBP) 1867–1870, a time of a transition that ambitious Cincinnati businessmen and ballplayer Harry Wright shaped as much as anyone. Major League Baseball recognized those events officially by sponsoring a centennial of professional baseball in 1969.