ClubLocationLeagueTierFounded
Sakuona—III Lyga - Klaipėda—1998
San Diego Flash—Dissolved 2018—1998
Sandefjord—Eliteserien—1998Sandefjord 2—3. Divisjon - Group 2—1998
Sankoyo Bush Bucks—Botswana First Division North—1998
Santa Catarina—Campeonato Catarinense - Série A—1998
Satun United—Dissolved 2022—1998
Septemvri Tervel—Treta Liga - North-East—1998
Shahrdari Ardabil—Iranian League 4—1998
Shakhter Peshelan—Chempionat Nizhegorodskoy Oblasti—1998
Shenzhen Bogang—Shenzhen Super League—1998
Six-Fours Le Brusc—Régional 1 - Méditerranée—1998
Slutsk—Pershaya Liga Belarusi—1998
Sokół Aleksandrów Łódzki—III Liga - Grupa I—1998Spartak Chukotka—Dissolved 2000—1998Sport Barueri——1998
Sporting Accra—Division Two League - GARFA—1998
Square Boys United——1998St. Louis Steamers [1998]—Dissolved 2006—1998
Sturm Graz II—Regionalliga Mitte—1998
Szeged LC—Dissolved 2000—1998