Frank George Mack
- Bats Right, Throws Right
- Height 6' 1½", Weight 180 lb.
- School Saint Mary's College of California
- High School San Diego High School
- Debut August 16, 1922
- Final Game June 15, 1925
- Born February 2, 1900 in Oklahoma City, OK USA
- Died July 2, 1971 in Clearwater, FL USA
Frank Mack was with the Chicago White Sox for three seasons, pitching eight games in 1922, then eleven games in 1922 and coming back for eight games in 1925. Pitching mostly in relief, he hurled a total of 71 innings and had a record of 2-3.
Frank was born in Oklahoma City, OK, but went to college in California at Saint Mary's College of California, which at the time was sending lots of players to the majors. For example, his time at Saint Mary's overlapped with that of Lew Fonseca. Mack started in the minors at age 20 in 1920, going 16-11 for the Calgary Bronchos, and the following year, 1921, was 8-6 split between two teams. During his three years in the majors, he spent part of each season in the minors. He was with the Seattle Indians in 1922, the Galveston Sand Crabs and the Nashville Volunteers in 1923, and the minor league Milwaukee Brewers in 1925. In between, in 1924, he spent the whole season with the Omaha Buffaloes, going 16-11. He finished up his pro career in 1926 back with the Buffaloes, pitching a few games and going 0-4.