National Nursing Home Week was created in 1967.
National League A was created in 1999.
National Security League was created in 1914.
A-League National Youth League was created in 2008.
Speedway National League Division Three was created in 1947.
Nigeria National League was created in 1979.
National Puzzlers' League was created in 1883.
National Rugby League was created in 1997.
Belgian National League was created in 1975.
National Service League was created in 1902.
National Rookie League was created in 2000.
Jamaica National League was created in 2005.