ClubLocationLeagueTierFounded
SC Brasil—Dissolved 1937—1912
SC Klosterneuburg—Dissolved 2014—1912SR Donaufeld—Regionalliga Ost—1912
SV Wittlich—Bezirksliga West—1912
Sabaria—Dissolved 1949—1912
San Giovanni Lupatoto—Promozione Veneto—1912Santos—Campeonato Brasileiro - Série A—1912Scalea—Eccellenza Calabria—1912Schermbeck—Oberliga Westfalen—1912Settimo—Eccellenza Piemonte-Valle d'Aosta—1912
Slavoj Trebišov—II. Liga—1912Sodingen—Westfalenliga—1912
Sparta Leerdam—Dissolved 1955—1912
Sport Guyanais—Promotion d'Honneur—1912
Sport Progreso—Dissolved 1990—1912Sportfreunde Schwäbisch Hall—Verbandsliga Württemberg—1912
Sporting São Tomé—Segunda Divisão - São Tomé—1912
St. Joseph's—Gibraltar National League—1912
Stabæk—1. Divisjon—1912
Stade Vallauris—Dissolved Inactive—1912Stormvogels—Tweede Klasse—1912Straßenbahn—Dissolved 1974—1912
Sudet—Kolmonen - Keski B—1912
Swansea City—EFL Championship—1912Szentlőrinci SE—NB II—1912Sárvár—MB I - Vas—1912