John Barton Davis (July 13, 1883 – October 7, 1946) was a Negro leagues pitcher for several years before the founding of the first Negro National League.
A 1907 St. Paul newspaper paper noted that Davis and fellow St. Paul Colored Gophers pitcher Clarence Lytle both had No-hitter games to their credit.
During World War I, when Davis registered for selective service and the draft, he listed he was working for International Harvester as a "dirt shaper" operator (which may have been a road grader). It also listed that he was married to Lizzie Davis.
Davis died in St. Paul, Minnesota in 1946 at the age of 63.