United Irish League was created in 1898.
Irish Worker League was created in 1923.
Irish National League was created in 1882.
Irish Dominion League was created in 1919.
Irish League Cup was created in 1986.
Irish Baseball League was created in 1997.
Irish Ice Hockey League was created in 2007.
Irish Anti-Partition League was created in 1945.
United League Baseball was created in 2006.
VTB United League was created in 2008.
United Hockey League was created in 1991.
United Basketball League was created in 2006.
United Soccer League was created in 1984.