ClubLocationLeagueTierFounded
SD Logroñés—Segunda Federación - Grupo 2—2009
SU Neckarsulm—Landesliga Württemberg—2009
Sacramento Gold—NPSL - Golden Gate Conference—2009
Salaam Aweil—Aweil Regional League—2009AIASalsa Ballers—AFA Senior League—2009
Samut Prakan FC—Thai League 3 - Bangkok Metropolitan Region—2009
San Antonio—Dissolved 2015—2009
San Cataldo—Eccellenza Basilicata—2009San Diego Sockers [MASL]—MASL—2009San Fernando CDI—Dissolved 2025—2009
San Francisco Masachapa—Dissolved 2019—2009
Shenyang Zhongze—Dissolved 2015—2009
Silistra 2009—Dissolved 2014—2009
Sivutsa Stars—Dissolved 2014—2009
Smolevichi—Drugaya Liga Belarusi—2009Songkhla United—Dissolved 2018—2009
Southern Myanmar—Dissolved 2021—2009
Speranța Crihana Veche—Dissolved 2015—2009Speyer 09—Bezirksliga Vorderpfalz—2009Sporting Terni—Dissolved 2013—2009
Stavropolye-2009—Dissolved 2010—2009
Still Believe—Division Two League - GARFA—2009Sukhothai—Thai League 1—2009
Sukthi—Dissolved 201?—2009Surin City—Thai League 3 - Northeastern Region—2009
Swieqi United—Maltese Challenge League—2009
São Gonçalo FC—Dissolved Inactive—2009
Sønderborg—Dissolved 2020—2009