Josiah St. John (born May 18, 1992) is a Canadian professional football offensive tackle.

[1] He was the first overall selection in the 2016 CFL Draft by the Saskatchewan Roughriders, but he was in a contract dispute with the team at the start of the 2016 season.

[2] He finally signed with the team on July 4, 2016 after missing all of training camp and the Roughriders' first game of the season.

St. John signed a practice roster agreement with the BC Lions on September 9, 2019.

[6] On November 5, 2019, St. John was added to the practice roster of the Edmonton Eskimos.