ClubLocationLeagueTierFounded
Ards—NIFL Championship—1900Ballymena United—NIFL Premiership—1934Bangor—NIFL Premier Intermediate League—1918Cliftonville—NIFL Premiership—1879Coleraine—NIFL Premiership—1927Crusaders—NIFL Premiership—1898Dungannon Swifts—NIFL Premiership—1949Glenavon—NIFL Premiership—1889Glentoran—NIFL Premiership—1882Linfield—NIFL Premiership—1886Portadown—NIFL Premiership—1887