| 26/2005 : Udarata Development Authority of Sri Lanka |
| 44/1999 : UNESCO Scholarship Fund |
| 26/1997 : Unfair Contract Terms |
| 16/1983 : United Muslim Association (Incorporation) |
| 45/1968 : United Nations |
| 16/1978 : Universities |
| 07/1985 : Universitites (Amendment) |
| 24/1988 : Universities (Amendment) |
| 26/1988 : Universities (Amendment) |
| 33/1988 : Universities (Amendment) |
| 03/1989 : Universities (Amendment) |
| 01/1995 : Universities (Amendment) |
| 57/2009 : Universities (Amendment) |
| 17/2016 : Universities (Amendment) |
| 01/1972 : University of Ceylon |
| 31/2008 : University of Vocational Technology |
| 48/1984 : Urban Councils (Amendment) |
| 18/1987 : Urban Councils (Amendment) |
| 35/2014 : Urban Councils (Amendment) |
| 21/2017 : Urban Councils (Amendment) |
| 13/1979 : Urban Councils and Town Councils (Amendment) |
| 70/1979 : Urban Development Authority (Amendment) |
| 04/1982 : Urban Development Authority (Amendment) |
| 49/1987 : Urban Development Authority (Amendment) |
| 41/1988 : Urban Development Authority (Amendment) |
| 36/2007 : Urban Development Authority (Amendment) |
| 44/1984 : Urban Development Authority (Special Provisions) |
| 02/1980 : Urban Development Projects (Special Provisions) |
| 36/2008 : Urban Settlement Development Authority |
| 15/2000 : Uthuru Kalutara Pauranika Kande Vivekarama Viharastha Development Fund (Incorporation) |
