Louis R. Bruce (1877–1968) was an American Major League Baseball outfielder. He played for the Philadelphia Athletics during the 1904 season. The son of a Mohawk chief from the St. Regis Mohawk Reservation in upstate New York, he attended Central High School in Philadelphia, where he excelled as a student while playing baseball. Discovered by Ed Barrow, he played for the minor league Toronto Maple Leafs from 1900 to 1903, where he was a two-way player, pitching and playing the outfield and finding success in both roles. He also attended the University of Pennsylvania Dental School during those days, and after retiring as a player, earned a degree in theology from Syracuse University.