Association football | association football | Soviet Union | Irish | European Union | Union Army | Forward (association football) | rugby union | Goalkeeper (association football) | Defender (association football) | National Basketball Association | Union | Irish people | American Association for the Advancement of Science | Irish language | Association of Tennis Professionals | American Library Association | World Boxing Association | National Collegiate Athletic Association | American Association | American Heart Association | International Telecommunication Union | trade union | Union (American Civil War) | National Association of Intercollegiate Athletics | Provisional Irish Republican Army | Union Pacific Railroad | National Rifle Association | International Development Association | England national rugby union team |
Prior to the establishment of the League, there had been no rank-and-file organisation of Irish nationalists since the Irish Union Association and Northern Council for Unity had become inactive in the late 1930s.