| 17/2012 : D. M. Dasanayake Social Serivice and Charity Foundation |
| 65/1992 : Dambadeniya Development Foundation (Incorporation) |
| 14/1994 : Dambadeniya Rajamaha Vihara Development Foundation (Incorporation) |
| 22/2014 : Dampe, Meegoda, Bodhiwardhanarama Sri Madurasama Pirivena Viharastha Sanwardhana Sabhawa (Incorporation) |
| 40/2022 : Dangerous Animals (Amendment) |
| 14/2024 : Dassana Bauddha Sanvidhanaya (Incorporation) |
| 12/1994 : Dawat-E-Hadiyah ( Sri Lanka) (Incorporation) |
| 17/2009 : Debit Tax (Amendment) |
| 16/2002 : Debits Tax |
| 05/2003 : Debits Tax (Amendment) |
| 12/2007 : Debits Tax (Amendment) |
| 14/2011 : Debits Tax(Repeal) |
| 41/1973 : Debt Conciliation (Amendment) |
| 19/1978 : Debt Conciliation (Amendment) |
| 20/1983 : Debt Conciliation (Amendment) |
| 29/1999 : Debt Conciliation (Amendment) |
| 04/2019 : Debt Conciliation (Amendment) |
| 02/1990 : Debt Recovery (Special Provisions) |
| 09/1994 : Debt Recovery(Special Provisions)(Amendment) |
| 01/1975 : Declaration of Assets and Liabilities |
| 29/1985 : Declaration of Assets and Liabilities (Amendment) |
| 74/1988 : Declaration of Assets and Liabilities (Amendment) |
| 35/2024 : Dedigama Sri Maithri Pragnartha Bouddha Educational Daham Sabhawa (Incorporation) |
| 18/1980 : Deeghavapi Prathisanskarana Sabhawa (Incorporation) |
| 11/1987 : Deepavyapta Bosat Lama Samaja Sanvidhanaya (Incorporation) |
| 16/2010 : Default Taxes (Special Provisions) |
| 14/2014 : Default Taxes (Special Provisions) (Amendment) |
| 52/1991 : Defence Levy |
| 36/1992 : Defence Levy (Amendment) |
| 66/1992 : Defence Levy (Amendment) |
| 62/1993 : Defence Levy (Amendment) |
| 25/1994 : Defence Levy(Amendment) |
| 10/1995 : Defence Levy (Amendment) |
| 36/1995 : Defence Levy (Amendment) |
| 17/1957 : Defence Regulations (Resuscitation) |
| 41/1968 : Defence Regulations (Resuscitation) |
| 25/1969 : Defence Regulations (Resuscitation) |
| 13/1976 : Defence Regulations (Resuscitation) |
| 05/2008 : Defence Services Command and Staff College |
| 13/2012 : Defence Services Command and Staff College (Amendment) |
| 29/2013 : Defence Services Command and Staff College (Amendment) |
| 25/1992 : Deha Dhamma (Divine Body Care) Center, Sri Lanka (Incorporation) |
| 36/1993 : Dehiwela Kalubowila Sri Hathbodhi Raja Maha Viharastha Vidyarakshaka Sabhawa (Incorporation) |
| 41/2009 : Department of Coast Guard |
| 18/1973 : Department of Prisons – Prisioners’ Welfare Fund |
| 54/1979 : Department of Prisons – Prisoners’ Welfare Fund (Amendment) |
| 22/1977 : Destruction of Valueless Documents (Special Provisions) |
| 16/1975 : Dev Suwa Sevawa (Incorporation) Law |
| 35/1980 : Development Councils |
| 45/1981 : Development Councils (Amendment) |
| 32/1982 : Development Councils (Amendment) |
| 21/1987 : Development Councils (Amendment) |
| 14/1989 : Development Councils (Repeal) |
| 20/1981 : Development Councils Elections |
| 06/1986 : Development Councils Elections (Amendment) |
| 12/1974 : Development Finance Corporation of Ceylon (Amendment) |
| 42/1982 : Development Finance Corporation of Ceylon (Amendment) |
| 25/1993 : Development Finance Corporation of Ceylon (Amendment) |
| 23/1997 : Development Finance Corporation of Ceylon (Amendment) |
| 20/1997 : Development Lotteries Board |
| 39/2014 : DFCC Bank (Repeal and Consequential Provisions) |
| 60/2007 : Dhaarul Uloom Al-Meezaniyyah Arabic College, Kurugoda, Akurana (Incorporation) |
| 52/2000 : Dhamma School Fund |
| 13/2000 : Dharma Chakkara Children’s Foundation of Sri Lanka (Incorporation) |
| 09/1997 : Dharmaraja Foundation (Incorporation) |
| 62/1979 : Dharmavijaya Foundation (Incorporation) Act |
| 53/2006 : Dharmayathana Conservation Society (Incorporation) |
| 09/1996 : Diplomatic Privileges |
| 46/1983 : Director of Cultural Affairs (Special Provisions) |
| 54/1957 : Director of Food Production (Change of Designation) |
| 25/1964 : Director of Industries ( Special Provisions) |
| 37/1973 : Director of pubic Works (Change of Designation) |
| 01/2013 : Divineguma |
| 02/2017 : Divineguma (Amendment) |
| 14/1985 : Divitura Uthara Pabbatharama Vihara Sanwardena Mandalaya (Incorporation) |
| 18/2012 : Dr. Malani Fonseka Foundation |
| 34/2008 : Dr. Soma Edirisinghe Fund (Incorporation) |
| 54/2007 : Drug Dependant Persons (Treatment and Rehabilitation) |
| 21/1992 : Duncan White Sports Foundation (Incorporation) |
