ClubLocationLeagueTierFounded
Rhyl—Dissolved 2020—1879
Roda JC O21—Dissolved 2020—1962
Royal Star Fléron—Dissolved 2020—1908
SAMB—Dissolved 2020—2010
SCR Altach Juniors—Dissolved 2020—UNKSVN—Dissolved 2020—1934
Saetas de Oro—Dissolved 2020—1975
Saint Louis FC—Dissolved 2020—2014
Salaise—Dissolved 2020—1978
San José FC—Dissolved 2020—2020
Sandhausen II—Dissolved 2020—UNK
Sangju Sangmu—Dissolved 2020—2011
Santos II—Dissolved 2020—2006
Sarayköy 1926—Dissolved 2020—1981
Savona—Dissolved 2020—1907Scheldezonen Branst—Dissolved 2020—1950
Shaheen Asmayee—Dissolved 2020—2012
Shanghai Shenxin—Dissolved 2020—2003
Shkëndija Tiranë—Dissolved 2020—1970Sichuan Longfor—Dissolved 2020—2013Siirtspor—Dissolved 2020—1969Simorgh Alborz—Dissolved 2020—2012
Sintra—Dissolved 2020—2007
Slavoj Sečovce—Dissolved 2020—1914
Solent University—Dissolved 2020—2005Sound FC—Dissolved 2020—2006
Spartak Vladikavkaz—Dissolved 2020—1921Sport Loreto—Dissolved 2020—1939Sporting Lokeren—Dissolved 2020—1923Sporting Lokeren U21—Dissolved 2020—UNK