| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
 |
Sligo Rovers | Republic of Ireland | |
 |
Sloboda of Tuzla | Yugoslavia | |
|
Slovan Bratislava | Yugoslavia | |
 |
Small Heath Alliance | England | |
 |
Smedby Biak | Sweden | |
|
Smethwick (Warley) Rangers | England | |
|
Smethwick Centaur | England | |
|
Smethwick Highfield | England | |
|
Smethwick St Marys | England | |
|
Smith Coggins FC | England | |
|
Snowdon Colliery (Kent) | England | |
 |
Sochaux | France | |
 |
Sogndal IF | Norway | |
|
Soho Rovers | England | |
|
Sola FK | Norway | |
|
Soliers [AMS] | France | |
|
Solihull Moors | England | |
|
Solihull Town | England | |
|
Solve BK | Sweden | |
 |
SonderjyskE | Denmark | |
 |
Sopron [MATAV SC] | Hungary | |
|
Soroksar SC | Hungary | |
 |
South Africa XI | South Africa | |
 |
South Australia | Australia | |
|
South Bank East End | England | |
|
South Bank FC | England | |
 |
South China FC | Hong Kong | |
|
South East End FC | England | |
 |
South Island | New Zealand | |
|
South Kirby Colliery | England | |
|
South Liverpool | England | |
|
South Lynn Wednesday | England | |
|
South Melbourne | Australia | |
|
South Melbourne Hellas | Australia | |
 |
South Rhodesia | Rhodesia | |
|
South Shields | England | |
|
South Shields Juniors | England | |
|
South Shore (Blackpool) | England | |
|
South West Districts | South Africa | |
|
Southampton | England | |
|
Southend United | England | |
 |
Southern California United | United States | |
|
Southern Suburbs | South Africa | |
|
Southern Transvaal | South Africa | |
|
Southport | England | |
|
Spakenburg (SV) | Holland | |
|
Spalding United | England | |
 |
Sparta Rotterdam | Holland | |
 |
Sparta Slavia | Czechoslovakia |
|