St. Thomas teams with membership in a senior/professional Canadian League or Union or competed against such senior team

• St. Thomas RCAF Hornets 1944

• Current players (2023) in CFL from St. Thomas: 0
• Current players (2023) in CFL from St. Thomas programs: 0
• All-time players in CFL from St. Thomas: 10
• All-time players in CFL from St. Thomas programs: 9

Feeder Football Programs in St. Thomas

• St. Thomas Jayhawks Jr. (Junior)
• St. Thomas Yellow Jackets Jr. (Junior)
• Parkside HS (High School)
• St. Joseph's HS (High School)
• St. Thomas Int. (Intermediate)
• St. Thomas Tigers Jr. (Junior)