ClubLocationLeagueTierFounded
SA Mohammadia—Régional 2 - Saïda—1930
SAC Sečovce—Dissolved UNK—1930
SHO—Eerste Klasse—1930SIM Raslavice—IV. Liga - VsFZ—1930
SO Romorantin—National 3—1930
San Andrés—Interinsular Preferente de Tenerife—1930
SePS—Dissolved 1978—1930
Serra—Campeonato Capixaba - Série A—1930Serranense—Campeonato Mineiro - Segunda Divisão—1930
Skarbøvik—Dissolved 2017—1930Skjervøy—3. Divisjon - Group 6—1930
Slavia Jesenice—I. B Třída Středočeského Kraje—1930
Sokol Saratov—FNL—1930
Sparta Linkeroever—Dissolved 2002—1930
Sportfreunde Uevekoven—Landesliga Mittelrhein—1930Sporting Coruñés—Primera Futgal—1930
Sportivo San Lorenzo—División Intermedia de Paraguay—1930
Sutherland Sharks—NPL NSW—1930São Paulo—Campeonato Brasileiro - Série A—1930