ClubLocationLeagueTierFounded
Cittadella—Serie C - Girone A—1973
Clan Juvenil—Segunda Categoría de Pichincha—1973
Complejo Deportivo JP—Liga Bellvillense de Fútbol - Primera A—1973
Continental Star—Midland League - Division Three—1973
Curicó Unido—Primera B de Chile—1973
Cádiz Mirandilla—Segunda Federación - Grupo 4—1973
Dakedaha—Somali First Division—1973
Dandy Town Hornets—Bermudian Premier Division—1973
Deportivo Mongomo—Liga Nacional SEGESA - Continental—1973
Detroit Wheels—Dissolved 1974—1973Due Torri—Promozione Sicilia—1973
Dumbéa—Promotion d'Honneur—1973
Eintracht Lahnstein—Dissolved 2011—1973
El Mokawloon El Arab—Egyptian Second Division A—1973
Ermis Exochis—EPS Pierias - A—1973Ethnikos Katerinis—EPS Pierias - A—1973
FC Waidhofen/Ybbs—Dissolved 2011—1973Flagler Saints—NCAA Division II—1973
Flying Camel—Dissolved 1997—1973
Frontera Rivera—Primera División Amateur—1973
GE Novorizontino—Dissolved 1999—1973
Gambia Ports Authority—GFA League First Division—1973
Gloria Buzău [1973]—Dissolved 2016—1973
Green Bay-Titirangi United—Dissolved 1998—1973
Guanacasteca—Primera División de Costa Rica—1973Guisborough Town—Northern League - Division One—1973
Gönenspor—Dissolved 2006—1973Haringey Borough—Isthmian League - North Division—1973Hawks—GFA League First Division—1973Heesseler SV—Kreisliga Hannover—1973