Frank Thomas Whitney
- Bats Right, Throws Right
- Height 5' 7½", Weight 152 lb.
- Debut May 17, 1876
- Final Game August 21, 1876
- Born February 18, 1856 in Brockton, MA USA
- Died October 30, 1943 in Baltimore, MD USA
Frank Whitney was the fourth outfielder for the Boston Red Caps in 1876. It was his only season in the majors. He was 20 years old at the time, and he and Foghorn Bradley were the youngest players on the team, which was managed by Harry Wright.
In 1888 it was reported that he was a jewelry drummer.
Another 19th Century player, Jim Whitney, was also on occasion referred to as Jumbo Whitney.