Frank Vernon Hemphill (May 13, 1878 – November 16, 1950) was a left fielder in Major League Baseball who played for the Chicago White Sox (1906) and Washington Senators (1909). Listed at 5 ft 11 in (1.80 m), 165 lb, Hemphill batted and threw right-handed. He was born in Greenville, Michigan. His older brother, Charlie Hemphill, also was a major league player.
In a two-season career, Hemphill was a .070 hitter (3-for-40) with two RBI, nine bases on balls, and one stolen base.
In 14 appearances at left field, he collected 33 outs and one assist while committing an error for a .971 fielding percentage.
Hemphill died in Chicago, Illinois at age 72.