John Joseph Fox
- Bats Unknown, Throws Unknown
- Debut June 2, 1881
- Final Game August 9, 1886
- Born February 7, 1859 in Roxbury, MA USA
- Died April 16, 1893 in Boston, MA USA
John Fox pitched four seasons in the majors during the 1880's. He also played some in the field, usually in the outfield, although he was not a strong hitter.
His obituary in Sporting Life stated that he died of pneumonia. In years previous to that he had played for semi-pro teams.