ClubLocationLeagueTierFounded
15 de Mayo—Primera B Nacional—1923
AKS Mikołów—V Liga - Śląska I—1923
APWC—Derde Klasse—1923
ASV Hornstein—II. Liga Nord - Burgenland—1923ASV Neufeld—II. Liga Nord - Burgenland—1923ATSV Deutsch-Wagram—Gebietsliga Nord/Nordwest - Niederösterreich—1923
Aglianese—Serie D - Girone D—1923
Ajka—NB II—1923
Akçaabat Sebatspor—Dissolved 2018—1923
All Boys-SR—Liga Cultural de Fútbol—1923Altınordu—TFF 2. Lig—1923
Amarante—Campeonato de Portugal - Série A—1923
Andenne——1923Arezzo—Serie C - Girone B—1923Argentino de Chacabuco—Liga Deportiva de Chacabuco—1923
Astur—Primera Asturfútbol—1923
Atromitos—Super League Greece—1923
Audincourt—Régional 1 - Bourgogne-Franche-Comté—1923
Avaí—Campeonato Brasileiro - Série B—1923Avintes—AF Porto - Divisão de Elite—1923
Banatul—Dissolved 1950—1923
Barmbek-Uhlenhorst—Landesliga Hamburg - Hammonia—1923
Bdin—Treta Liga - North-West—1923Belasitsa—Vtora Liga—1923Bergantiños—Segunda Federación - Grupo 1—1923
Besa—Liga e Tretë e Kosovës—1923Beskid Skoczów—V Liga - Śląska II—1923
Billingham Synthonia—Northern League - Division Two—1923Bocholter VV—Belgian Division 2 - VV B—1923Borja—Regional Preferente de Aragón—1923