| Klub | Stiftet | Stadion |
|---|
 | Alexander Works | | |
 | Annagh United | 1963 | BMG Arena |
 | Ards | 1902 | Clandeboye Park |
 | Armagh City | 1964 | Holm Park |
| Avoniel | | |
 | Ballinamallard United | 1975 | Ferney Park |
 | Ballyclare Comrades | februar 1919 | Dixon Park |
 | Banbridge Town | 1947 | Crystal Park |
 | Bangor | 1918 | Clandeboye Park |
| Barn FC | 1912 | Taylor's Avenue |
| Belfast Athletics FC | | |
 | Belfast Celtic | 1891 | Celtic Park |
 | Belfast United | 0 | |
| Belfast YMCA | før 1888 | |
| Black Watch Regiment | | |
| Brantwood FC | 1901 | Skegoneill Avenue |
| Broadway United | | |
| Cameron Highlanders Regiment | | |
| Castlederg FC | | |
| Chimney Corner | 1952 | Allen Park |
| Clarence FC | før 1888 | |
| Coagh United | 1970 | Hagan Park |
 | Dergview FC | 1980 | Darragh Park |
| Derry Celtic | 1892 | Brandywell Park |
| Derry Guilds | | |
| Derry Hibernians | | |
| Derry North End | | |
| Derry Olympic | ca. 1890 | |
 | Donegal Celtic | 1970 | Donegal Celtic Park |
 | Dundela FC | 1895 | Wilgar Park |
| Dunmurry Recreation | | |
| Forth River FC | | |
| Gordon Highlanders Regiment | | |
 | Harland & Wolff Welders | 1965 | Blanchflower Park |
| Infantry Training Centre | | |
| Inniskilling Fusiliers Regiment | | |
 | Institute | 1905 | The YMCA Riverside Stadium |
| Ivy FC | | |
| K.O.S.B. Regiment | | |
| Killyleagh Youth Club | | |
| Kilmore Recreation | 1967 | Robert Adams Park |
| King's Own Rifles | | |
| Knock FC | | |
| Knockbreda | 1947 | Breda Park |
| Lancashire Fusiliers Regiment | | |
| Larne Tech Old Boys | 30. maj 1950 | Dennis Harvey Park |
| Leinster Nomads FC | | |
| Ligoniel FC | ca. 1890 | |
 | Limavady United | 1876 | The Showgrounds |
| Linfield Rangers | | |
| Linfield Swifts | | |
 | Lisburn Distillery | 1879 | New Grosvenor Stadium |
| Lurgan Celtic | 1970erne | Knockramer Park |
| Milford FC | før 1888 | |
| Milltown FC | | |
| Moyola Park | 1880 | Moyola Park |
 | Newington Youth Club | 1979 | Inver Park, Larne |
 | Newry City | 1918 | The Showgrounds |
 | Newry City AFC | 2013 | The Showgrounds |
| North Staffordshire Regiment | | |
| Oldpark FC | 1879 | |
| Omagh FC | | |
 | Omagh Town | 1964 | St. Julians Road |
 | Oxford United Stars | 1937 | Swilley Stadium |
| P.O.S.C. Belfast | | |
 | PSNI FC | 1956 | Newforge Lane |
| Queen's Island | 1879-80 | |
| Queen's University | 1908 | Newforge Lane |
| Richmond Rovers | | |
| Royal Irish Fusiliers Regiment | | |
| Royal Scots Regiment | | |
| Scots Guards Regiment | | |
| Sherwood Foresters | | |
| St.Columb's Court | før 1889 | Brandywell Park |
| St.Columb's Hall Celtic | | |
| St.Columb's Hall FC | | |
| Strandville FC | | |
 | Tobermore United | 1965 | Fortwilliam Park |
| Ulster FC | 1879 | Ulsterville |
 | Warrenpoint Town | 1988 | Stangmore Park |
| Wellington Park | | |
| Willowfield | | |
| Yorkshire Regiment | | |
