ClubLocationLeagueTierFounded
1st Bangor Old Boys—NAFL - Premier Division—1967Abbey Villa—NAFL - Division 1A—1955Annagh United—NIFL Championship—1963Armagh City—NIFL Championship—1964Ballinamallard United—NIFL Championship—1975Ballyclare Comrades—NIFL Championship—1919Ballymacash Rangers—Mid-Ulster Football League - Intermediate A—1984Ballymoney United—Ballymena & Provincial Football League—1944Ballynure Old Boys—Ballymena & Provincial Football League—1969Banbridge Town—NIFL Premier Intermediate League—1947Belfast Celtic [1978]—Ballymena & Provincial Football League—1978Brantwood—Ballymena & Provincial Football League—1901Coagh United—Ballymena & Provincial Football League—1970Cookstown RBL—Ballymena & Provincial Football League—UNKCromac Albion—Dissolved 1991—UNKCrumlin Star—NAFL - Premier Division—1947Donegal Celtic—Ballymena & Provincial Football League—1970Dromara Village—NAFL - Division 1A—1976East Belfast—NAFL - Premier Division—1929Enniskillen Rangers—Fermanagh & Western Division One—1953Fivemiletown United—Mid-Ulster Football League - Intermediate A—1888H&W Welders—NIFL Championship—1965Institute—NIFL Championship—1905Kilmore Rec—NAFL - Division 1A—1967Knockbreda—NIFL Championship—1948Limavady United—NIFL Premier Intermediate League—1884Linfield Swifts——Loughgall—NIFL Championship—1967Mindwell—Mid-Ulster Football League - Division 3—UNKNewington—NIFL Championship—1979