ClubLocationLeagueTierFounded
Newark Americans—Dissolved in 1932—1930
Newcastle Blue Star—Northern League - Division Two—1930
Nidelv—5. Divisjon - Trøndelag—1930
Nuorese—Promozione Sardegna—1930
OKS—Fynsserien—1930
Olimpic Cetate Râșnov—Liga III—1930
Pallo-Iirot—Kakkonen—1930
Pivdenstal—Dissolved in 2005—1930
Poppenbüttel—Landesliga Hamburg - Hammonia—1930Portul—Liga IV - Constanța—1930
RJS Bas-Oha—Dissolved in 2013—1930RUS Rebecquoise—Belgian Division 3 - ACFF A—1930
Rabat Ajax—Maltese Amateur League—1930
Rapitenca—Tercera Federación - Grupo 5—1930Real Madrid Castilla—Primera Federación - Grupo 1—1930
Rijnsburgse Boys—Tweede Divisie—1930
Rostov—Russian Premier League—1930
Rydaholms GoIF—Division 5 Småland Sydvästra—1930Räppe GoIF—Division 2 Södra Götaland—1930
SA Mohammadia—Régional 2 - Saïda—1930
SAC Sečovce—Dissolved in UNK—1930SHO—Eerste Klasse—1930SIM Raslavice—IV. Liga - VsFZ—1930
SO Romorantin—National 3—1930San Andrés—Interinsular Preferente de Tenerife—1930SePS—Dissolved in 1978—1930
Serra—Campeonato Capixaba - Série A—1930Serranense—Campeonato Mineiro - Segunda Divisão—1930Skarbøvik—Dissolved in 2017—1930Skjervøy—3. Divisjon - Group 6—1930