ClubLocationLeagueTierFounded
Broughty Athletic—Midlands Football League—1920
Budakalászi MSE—MB I - Pest—1920
Budućnost Dobanovci—Beogradska Zona—1920
Bully—Régional 2 - Hauts-de-France—1920
Busca 1920—Promozione Piemonte-Valle d'Aosta—1920CA Bastia—Dissolved 2017—1920
CSM Lugoj—Liga IV - Timiș—1920Cagliari—Serie A—1920Camelon Juniors—EoSFL - First Division—1920
Casa Pia—Primeira Liga de Portugal—1920
Caxias—Dissolved Inactive—1920Cervia—Promzoione Emilia Romagna—1920
Chomutov—ČFL—1920Civitavecchia—Eccellenza Lazio—1920
Club Africain—Tunisian Ligue Professionnelle 1—1920Colțea Brașov—Liga IV - Brașov—1920Comprensorio Montalto—Dissolved 2016—1920Cormorans de Penmarch—Régional 3 - Bretagne—1920Cynthia—Dissolved 2020—1920
De Volewijckers—Dissolved 2013—1920
Defensores de Glew—Torneo Promocional Amateur—1920
Dolný Kubín—II. Liga—1920
Domžale—Dissolved 2026—1920
Dornach—2. Liga Interregional - Groupe 3—1920
Doshisha University—Kansai Student Soccer League - Division 1—1920
Dudenhofen—Oberliga Rheinland-Pfalz/Saar—1920Dunaharaszti MTK—NB III - Southwest—1920
Dunedin Technical—FootballSouth Premier League—1920
Dürnkrut—2. Klasse Marchfeld - Niederösterreich—1920ES Thaon—National 3—1920