The most important event of the 2003/04 Ystalyfera RFC season was the creation of Regional Rugby in 2003, which resulted in a major restructuring of the National League.
Soviet Union | Wales | New South Wales | European Union | Union Army | rugby union | Prince of Wales | Charles, Prince of Wales | Union | rugby league | University of New South Wales | rugby | International Telecommunication Union | Halifax Regional Municipality | trade union | Rugby | Newcastle, New South Wales | South Wales | Union (American Civil War) | Wales national football team | Rugby World Cup | Rugby School | Union Pacific Railroad | England national rugby union team | Ryde, New South Wales | Governor of New South Wales | American Civil Liberties Union | Wales national rugby union team | New Zealand national rugby union team | New Zealand Māori rugby league team |