United States Baseball League was created in 1912.
United Irish League was created in 1898.
United Soccer League was created in 1984.
VTB United League was created in 2008.
United Basketball League was created in 2006.
United Hockey League was created in 1991.
United Soccer League of Pennsylvania was created in 1959.
United Indoor Football League was created in 2010.
United Football League - Philippines - was created in 2009.
Sunbury United Rugby League was created in 1992.
Economic League - United Kingdom - was created in 1919.
United Counties Football League was created in 1934.