Harry Pratt Lyons (March 25, 1866 – June 30, 1912) was an American outfielder for the Philadelphia Quakers (1887), St. Louis Browns (1887–88), New York Giants (1889 and 1892–93), and Rochester Broncos (1890).

He led the American Association in At Bats (584) and Outs (432) in 1890.

In 6 seasons he played in 407 Games and had 1,713 At Bats, 246 Runs, 401 Hits, 31 Doubles, 21 Triples, 7 Home Runs, 198 RBI, 120 Stolen Bases, 97 Walks, .234 Batting Average, .277 On-base percentage, .289 Slugging Percentage and 495 Total Bases.

He died in Mauricetown, New Jersey at the age of 46 and was interred at West Laurel Hill Cemetery in Philadelphia, Pennsylvania.

This biographical article relating to an American baseball outfielder born in the 1860s is a stub.