Harry H. Davis (July 19, 1873 – August 11, 1947) was an American Major League Baseball first baseman who played for the New York Giants (1895–96), Pittsburgh Pirates (1896–98), Louisville Colonels (1898), Washington Senators (1898–99), Philadelphia Athletics (1901–11, 1913–17), and Cleveland Naps (1912).

Davis was the starting first baseman and first captain of manager Connie Mack's Philadelphia Athletics from 1901 to 1910.

He returned to the Athletics as a player, coach and assistant captain in 1913,[2] amassing only 33 plate appearances over the next five seasons combined.

In 1755 games over 22 seasons, Davis posted a .277 batting average (1841-for-6653) with 1001 runs, 361 doubles, 145 triples, 75 home runs, 951 RBI, 285 stolen bases, 525 bases on balls, .335 on-base percentage and .408 slugging percentage.

He continued as a coach and scout with Mack's Athletics until 1927 and also served as a Philadelphia City Councilman.