Irish National League was created in 1882.
Irish Dominion League was created in 1919.
Irish League Cup was created in 1986.
United Irish League was created in 1898.
Irish Worker League was created in 1923.
Irish Ice Hockey League was created in 2007.
Irish Anti-Partition League was created in 1945.
Irish American Baseball Hall of Fame was created in 2008.
Eastern League - baseball - was created in 1923.
Ladies League Baseball was created in 1997.
Continental Baseball League was created in 2006.
Canadian Baseball League was created in 2003.