| 03/2004 : S. D. Bandaranayake Foundation (Incorporation) |
| 06/1983 : S. W. R. D. Bandaranaike National Memorial Foundation (Amendment) |
| 48/1981 : S.W.R.D Bandaranaike National Memorial Foundation (Special Provisions) |
| 02/1975 : S.W.R.D. Bandaranaike National Memorial Foundation |
| 70/1988 : SAARC Regional Convention on Suppression of Terrorism |
| 28/1992 : Sadaham Mithuru Samuluwa (Incorporation) |
| 03/2018 : Safeguard Measures |
| 20/2000 : Sahanoda Foundation (Incorporation) |
| 43/1973 : Sale of State Lands (Special Provisions) |
| 32/1998 : Salihiya Thaikka (Incorporation) |
| 13/2024 : Samadhi Community Development Foundation (Incorporation) |
| 41/2024 : Samadhi Meditation and Yoga Centre (Incorporation) |
| 64/2009 : Samaja Sahana Padanama (Incorporation) |
| 05/2007 : Samastha Lanka International Development Association (Incorporation) |
| 16/2014 : Samastha Lanka Shasanarakshaka Mandalaya (Incorporation) |
| 19/1980 : Sambuddha Jayanthi Chaitya Trust |
| 53/2009 : Sammanthurai Thableekul Islam Arabic College (Incorporation) |
| 76/2009 : Samoda Foundation (Incorporation) |
| 30/1995 : Samurdhi Authority of Sri Lanka |
| 02/1997 : Samurdhi Authority of Sri Lanka (Amendment) |
| 39/2007 : Sarana Buddhist (Relief) Foundation (Incorporation) |
| 01/1999 : Sareeram Sri Lanka National Foundation (Incorporation) |
| 31/1984 : Sarvodaya Trust Fund For The Advancement Of Humanity, Development And Peace (Incorporation) |
| 19/2005 : Saumyamoorthy Thondaman Memorial Foundation |
| 05/1996 : Save the Nation Contribution |
| 08/2002 : Save the Nation Contribution (Abolition) |
| 37/1996 : Save the Nation Contribution(Amendment) |
| 38/1997 : Save the Nation Contribution (Amendment) |
| 29/2024 : Saweera Foundation (Incorporation) |
| 08/1993 : School Development Boards |
| 32/2008 : School Teachers Pension (Amendment) |
| 11/1994 : Science and Technology Development |
| 32/2013 : Science and Technology Development (Amendment) |
| 24/1984 : Seamen’s Welfare Fund |
| 15/2010 : Secretary to the Treasury (Nomination of Representative) |
| 49/2009 : Secured Transactions |
| 17/2024 : Secured Transactions |
| 19/2021 : Securities and Exchange Commission of Sri Lanka |
| 18/2003 : Securities and Exchange Commission of Sri Lanka (Amendment) |
| 47/2009 : Securities and Exchange Commission of Sri Lanka (Amendment) |
| 36/1987 : Securities Council |
| 26/1991 : Securities Council (Amendment) |
| 22/2003 : Seed |
| 44/2007 : Seethawaka Maniyangama Rajamaha Viharastha Sanwardhana Sabhawa (Incorporation) |
| 04/1980 : Senkadagala Eksath Bauddha Mandalaya (Incorporation) |
| 54/2009 : Serendib Educational Foundation (Incorporation) |
| 12/1991 : Serendib Foundation (Incorporation) |
| 41/1974 : Serendip Sufi Study Circle |
| 41/1957 : Servicemen(Collection and Disposal of Specified Property) |
| 27/1975 : Settlement of Debts |
| 10/1976 : Settlement of Debts (Amendment) |
| 10/1987 : Seva Vanitha Movement Of Sri Lanka (Incorporation) |
| 40/2024 : Shaili Educational Foundation (Incorporation) |
| 19/2007 : Shantha Children’s Education Services Foundation (Incorporation) |
| 14/2018 : Shop and Office Employees (Regulation of Employment and Remuneration (Amendment) |
| 07/1975 : Shop and Office Employees (Regulation of Employment and Remuneration) (Amendment) |
| 53/1981 : Shop and Office Employees (Regulation of Employment and Remuneration) (Amendment) |
| 44/1985 : Shop and Office Employees (Regulation of Employment and Remuneration) (Amendment) |
| 28/2024 : Shop and Office Employees (Regulation of Employment and Remuneration) (Amendment) |
| 36/1982 : Shop and Office Employees (Regulation of Employment and Remuneration) and Wages Boards (Amendment) |
| 01/2021 : Shop and Office Employees (Regulation of Employment and Remuneration)(Amendment) |
| 12/1978 : Shop and Office Employees Regulation of Employment and Remuneration (Amendment) |
| 12/1998 : Shrama Vasana Fund |
| 15/2019 : Shrama Vasana Fund (Amendment) |
| 62/1998 : Sigiriya Heritage Foundation |
| 30/1975 : Silk and Allied Products Development |
| 36/1974 : Silkworm Seed |
| 68/1981 : Sir John Kotelawala Defence Academy |
| 50/2007 : Sir John Kotelawala Defence Academy (Amendment) |
| 27/1988 : Sir John Kothalawala Defence Academy (Amendment) |
| 44/1982 : Sir Razik Fareed Foundation (Incorporation) |
| 37/2000 : Siraj Arabic College, Oddamavadi (Incorporation) |
| 15/1975 : Siri Anuradhapura Bastian Pilgrims Rest Management Society |
| 40/1986 : Siri Anuradhapura Bastian Pilgrims Rest Management Society (Repeal) |
| 04/2010 : Siriniwes Prajamithra Sahayogitha Kendraya (Incorporation) |
| 20/2022 : Sisira Jayakody Siyapatha Foundation (Incorporation) |
| 43/2014 : Sivmuni Se Vehera Buddhist Foundation (Incorporation) |
| 33/2022 : Small Claims Courts’ Procedure |
| 41/1971 : Small Tenements (Repeal) |
| 29/2006 : Social Security Benefit Scheme for Media Personnel |
| 17/1996 : Social Security Board |
| 33/1999 : Social Security Board (Amendment) |
| 25/2022 : Social Security Contribution levy |
| 15/2023 : Social Security Contribution Levy (Amendment) |
| 15/2024 : Social Security Contribution Levy (Amendment) |
| 48/2009 : Social Service Foundation of Wickramashila Dharmayathenaya – Bandaragama |
| 11/2005 : Societies Ordinance (Amendment) |
| 40/2009 : Society of Structural Engineers of Sri Lanka (Incorporation) |
| 06/1991 : Society Of The Apostolic Church Of Sri Lanka (Incorporation) |
| 04/2013 : Society of the Ceylonese Brother’s of St. Joseph |
| 53/1992 : Society of the Margaya Fellowship of Sri Lanka (Incorporation) |
| 24/1996 : Soil Conservation(Amendment) |
| 18/1996 : Southern Development Authority of Sri Lanka |
| 48/2007 : Special Commodity Levy |
| 12/2014 : Special Commodity Levy (Amendment) |
| 03/1999 : Special Educational Society (Incorporation) |
| 04/1978 : Special Presidential Commission of Inquiry (Special Provisions) |
| 38/1986 : Special Presidential Commissions of Inquiry (Amendment) |
| 45/1990 : Specified Certificates of Deposit (Tax and other Concessions) |
| 25/1973 : Sports |
| 47/1993 : Sports (Amendment) |
| 33/2005 : Sports (Amendment) |
| 10/1998 : Sports Law (Amendment) |
| 48/1980 : Sree Narayana Guru Society of Sri Lanka |
| 12/2024 : Sri Balabhivurdhi Wardana Samithiya (Incorporation) |
| 30/1993 : Sri Bodhiraja Foundation (Incorporation) |
| 51/2011 : Sri Dhammalankara Social Services |
| 54/1983 : Sri Jayawardenepura General Hospital Board |
| 23/1988 : Sri Jayewardenepura Pitakotte Eksath Avamangalliyadhara (Shavakruththiyadhara) Samithiya. (Incorporation) |
| 60/1992 : Sri Kalyani Eksath Buddha Sangamaya (Incorporation) |
| 62/2009 : Sri Kalyanodaya Society |
| 15/1995 : Sri Lanka Accounting and Auditing Standards |
| 32/2005 : Sri Lanka Accreditation Board for Conformity Assessment |
| 46/2014 : Sri Lanka Association of Professional Social Workers (Incorporation) |
| 40/2014 : Sri Lanka Atomic Energy |
| 11/2024 : Sri Lanka Baptist Sangamaya (Incorporation) (Amendment) |
| 11/1977 : Sri Lanka Broadcasting Corporation (Amendment) |
| 48/1988 : Sri Lanka Broadcasting Corporation (Amendment) |
| 08/1996 : Sri Lanka Broadcasting Corporation(Special Provisions) |
| 22/2007 : Sri Lanka Buddhist Vihara Devala Foundation (Incorporation) |
| 21/1985 : Sri Lanka Bureau of Foreign Employment |
| 04/1994 : Sri Lanka Bureau of Foreign Employment (Amendment) |
| 56/2009 : Sri Lanka Bureau of Foreign Employment (Amendment) |
| 25/1981 : Sri Lanka Campus Crusade For Christ (Incorporation) |
| 10/1997 : Sri Lanka Cancer Society (Incorporation) |
| 43/1981 : Sri Lanka Chamber Of Small Industry (Incorporation) |
| 01/2010 : Sri Lanka Chamber of Small Industry (Incorporation) (Amend.) |
| 47/1987 : Sri Lanka Council for Agricultural Research Policy |
| 04/1992 : Sri Lanka Council of Archaeologists (Incorporation) |
| 13/2005 : Sri Lanka Disaster Management |
| 33/2011 : Sri Lanka Economic Association |
| 20/2009 : Sri Lanka Electricity Act |
| 36/2024 : Sri Lanka Electricity Act |
| 31/2013 : Sri Lanka Electricity (Amendment) |
| 16/2022 : Sri Lanka Electricity (Amendment) |
| 01/1994 : Sri Lanka Energy Managers Association (Incorporation) |
| 42/1992 : Sri Lanka Ex- Servicemen’s Association (Amendment) |
| 08/1976 : Sri Lanka Ex- Servicemen’s Association |
| 02/1973 : Sri Lanka Ex – Servicemen’s Institute |
| 15/1978 : Sri Lanka Export Credit Insurance Corporation |
| 40/1979 : Sri Lanka Export Development |
| 04/2007 : Sri Lanka Federation of the Visually Handicapped (Incorporation) |
| 12/1985 : Sri Lanka Federation of University Women (Incorporation) |
| 31/1973 : Sri Lanka Foundation |
| 34/1981 : Sri Lanka Foundation (Amendment) |
| 30/1973 : Sri Lanka Fruit Board |
| 29/1995 : Sri Lanka Institute of Advanced Technical Education |
| 25/2006 : Sri Lanka Institute of Advanced Technical Education (Amendment) |
| 01/1976 : Sri Lanka Institute of Architects |
| 14/1996 : Sri Lanka Institute of Architects (Amendment) |
| 37/1983 : Sri Lanka Institute of Co-operative Management |
| 06/2004 : Sri Lanka Institute of Co-operative Management (Repeal) |
| 07/2000 : Sri Lanka Institute of Credit Management (Incorporation) |
| 09/1982 : Sri Lanka Institute of Development Administration |
| 22/1997 : Sri Lanka Institute of Development Administration (Amendment) |
| 02/1998 : Sri Lanka Institute Of Interior Designers (Incorporation) |
| 33/2009 : Sri Lanka Institute of Landscape Architects |
| 31/1999 : Sri Lanka Institute of Local Governance |
| 41/1980 : Sri Lanka Institute of Marketing (Incorporation) |
| 18/1984 : Sri Lanka Institute of Printing |
| 45/2000 : Sri Lanka Institute of Strategic Studies |
| 32/2006 : Sri Lanka Institute of Strategic Studies (Amendment) |
| 13/2023 : Sri Lanka Institute of Taxation (Incorporation) (Amendment) |
| 21/2000 : Sri Lanka Institute of Taxes (Incorporation) |
| 53/1979 : Sri Lanka Inventors Incentives |
| 02/1991 : Sri Lanka Islamic Centre (Incorporation) |
| 17/1992 : Sri Lanka Islamic Renaissance Movement Association (Incorporation) |
| 46/1985 : Sri Lanka Judges’ Institute |
| 13/2021 : Sri Lanka Land Development Corporation (Amendment) |
| 35/2006 : Sri Lanka Land Reclamation and Development Corporation (Amendment) |
| 11/2019 : Sri Lanka Land Reclamation and Development Corporation (Amendment) |
| 07/2004 : Sri Lanka Library Association (Incorporation) (Amendment) |
| 20/1974 : Sri Lanka Library Association (Incorporation) Law |
| 38/2024 : Sri Lanka National Commission for UNESCO |
| 15/1973 : Sri Lanka National Freedom from Hunger Campaign |
| 19/1988 : Sri Lanka Nurses Council |
| 35/2005 : Sri Lanka Nurses Council (Amendment) |
| 51/1979 : Sri Lanka Ports Authority |
| 07/1984 : Sri Lanka Ports Authority (Amendment) |
| 35/1984 : Sri Lanka Ports Authority (Amendment) |
| 02/1992 : Sri Lanka Ports Authority (Amendment) |
| 23/2023 : Sri Lanka Ports Authority (Amendment) |
| 36/1990 : Sri Lanka Ports Authority (Special Provisions) |
| 05/1973 : Sri Lanka Press Council |
| 13/2002 : Sri Lanka Press Council (Amendment) |
| 03/2005 : Sri Lanka Railway Authority (Repeal) |
| 60/1993 : Sri Lanka Railways Authority |
| 06/1982 : Sri Lanka Rupavahini Corporation |
| 26/2022 : Sri Lanka Rupavahini Corporation (Amendment) |
| 43/1988 : Sri Lanka Rupawahini Corporation (Amendment) |
| 31/1958 : Sri Lanka Sahithya Mandalaya |
| 24/2011 : Sri Lanka Samata Setha Foundation (Incorporation) |
| 36/1985 : Sri Lanka Samodaya Foundation (Incorporation) |
| 39/1998 : Sri Lanka Society For Numismatic Studies (Incorporation) |
| 52/2009 : Sri Lanka Society for the Prevention of cruelty to Animals (Incorporation) |
| 06/1984 : Sri Lanka Standards Institution |
| 49/1979 : Sri Lanka State Plantations Corporation (Amendment) |
| 34/1985 : Sri Lanka State Plantations Corporation (Amendment) |
| 33/1970 : Sri Lanka State Trading Corporations |
| 67/1981 : Sri Lanka State Trading Corporations (Amendment) |
| 10/1986 : Sri Lanka Sumithrayo (Incorporation) |
| 19/2017 : Sri Lanka Sustainable Development |
| 35/2007 : Sri Lanka Sustainable Energy Authority |
| 14/1975 : Sri Lanka Tea Board |
| 17/1985 : Sri Lanka Tea Board (Amendment) |
| 44/1990 : Sri Lanka Tea Board (Amendment) |
| 29/2003 : Sri Lanka Tea Board (Amendment) |
| 44/2006 : Sri Lanka Tea Board (Amendment) |
| 13/2018 : Sri Lanka Tea Board (Amendment) |
| 25/1991 : Sri Lanka Telecommunications |
| 27/1996 : Sri Lanka Telecommunications(Amendment) |
| 39/2024 : Sri Lanka Telecommunications (Amendment) |
| 27/2005 : Sri Lanka Transport Board |
| 39/2008 : Sri lanka Transport Board (Amendment) |
| 17/1986 : Sri Lanka United Malay Organisation (Incorporation) |
| 46/1987 : Sri Lanka Working Journalist Association (Incorporation) |
| 41/2007 : Sri Lanka-Nippon Educational and Cultural Centre (Incorporation) |
| 01/2003 : Sri Narada Bauddha Madhyasthana Vihara Sanwardana Sabawa (Incorporation) |
| 33/1986 : Sri Punyodaya Samitiya (Incorporation) Act |
| 18/2008 : Sri Rathnajothi Community Development and Social Foundation (Incorporation) |
| 06/2007 : Sri Sarananda Development Foundation (Incorporation) |
| 49/1998 : Sri Sarananda Foundation (Incorporation) |
| 02/2008 : Sri Saranankara Development Foundation (Incorporation) |
| 15/2022 : Sri Shakyasinharama Viharastha Karyasadhaka Sanvidanaya (Incorporation) |
| 61/1992 : Sri Subodharama Sasanaseva Samithiya (Incorporation) |
| 27/1992 : Sri Sugatha Community Development Foundation (Incorporation) |
| 22/2000 : Sri Sunethra Mahadevi Pirivena Rajamaha Vihara Sasana Development Society (Incorporation) |
| 03/1968 : Stamp (Amendment) |
| 49/1968 : Stamp (Amendment) |
| 50/1971 : Stamp (Amendment) |
| 21/1973 : Stamp (Amendment) |
| 28/1975 : Stamp (Amendment) |
| 43/1982 : Stamp Duty |
| 71/1988 : Stamp Duty (Amendment) |
| 27/1991 : Stamp Duty (Amendment) |
| 29/1993 : Stamp Duty (Amendment) |
| 63/1993 : Stamp Duty (Amendment) |
| 06/1996 : Stamp Duty(Amendment) |
| 38/1996 : Stamp Duty (Amendment) |
| 25/1999 : Stamp Duty (Amendment) |
| 27/2000 : Stamp Duty (Amendment) |
| 12/2006 : Stamp Duty (Special Provisions) |
| 10/2008 : Stamp Duty Special Provision (Amendment) |
| 11/1972 : State Agricultural Corporations |
| 20/1980 : State Agricultural Corporations (Amendment) |
| 47/1971 : State Film Corporation |
| 13/1971 : State Gem Corporation |
| 64/1981 : State Gem Corporation (Amendment) |
| 49/1957 : State Industrial Corporations |
| 07/1979 : State Lands (Recovery of Possession) |
| 58/1981 : State Lands (Recovery of Possession) (Amendment) |
| 29/1983 : State Lands (Recovery of Possession) (Amendment) |
| 45/1992 : State Lands (Recovery of Possession) (Amendment) |
| 29/1997 : State Lands (Recovery of Possession)(Amendment) |
| 13/1975 : State Mortgage and Investment Bank |
| 62/1981 : State Mortgage and Investment Bank (Amendment) |
| 29/1984 : State Mortgage and Investment Bank (Amendment) |
| 10/1994 : State Mortgage and Investment Bank (Amendment) |
| 24/1968 : State Priniting Corporation |
| 51/1981 : State Printing Corporation (Amendment) |
| 07/1998 : State Printing Corporation (Amendment) |
| 14/2008 : Strategic Development Projects |
| 12/2011 : Strategic Development Projects (Amendment) |
| 16/2013 : Strategic Development Projects (Amendment) |
| 50/1983 : Student (Higher Education) Loans |
| 04/1972 : Students (Higher Education) Loan Fund |
| 05/1992 : Sugar Cane Research Institute (Amendment) |
| 75/1981 : Sugarcane Research Institute |
| 17/1999 : Sugathadasa National Sports Complex Authority |
| 14/2017 : Sugathadasa National Sports Complex Authority (Amendment) |
| 28/1984 : Sukhitha Subasadhaka Sangamaya (Incorporation) |
| 50/1987 : Superior Courts Complex Board of Management |
| 41/1981 : Superior Major Of The Silvestro-benedictine Congregation In Sri Lanka (Incorporation) |
| 65/1979 : Supplementary Allowance of Workers |
| 11/1999 : Suppression of Terrorist Bombings |
| 42/2000 : Suppression of Unlawful Acts Against the Safety of Maritime Navigation |
| 31/1996 : Suppression of Unlawful Acts of Violence at Airports Serving International Civil Aviation |
| 04/1960 : Supreme Court Appeals (Special Provisions) |
| 06/1961 : Surcharge on Income Tax |
| 25/1979 : Surcharge on Income Tax |
| 31/1981 : Surcharge on Income Tax |
| 26/1982 : Surcharge on Income Tax |
| 12/1984 : Surcharge on Income Tax |
| 07/1989 : Surcharge on Income Tax |
| 06/2001 : Surcharge on Income tax |
| 17/1991 : Surcharge on Income Tax (Amendment) |
| 32/1992 : Surcharge on Income Tax (Amendment) |
| 28/1993 : Surcharge on Income Tax (Amendment) |
| 23/1994 : Surcharge on Income Tax (Amendment) |
| 13/1995 : Surcharge on Income Tax (Amendment) |
| 25/1982 : Surcharge on Wealth Tax |
| 08/1989 : Surcharge on Wealth Tax |
| 14/2022 : Surcharge Tax |
| 17/2002 : Survey |
| 22/1982 : Surveyors’ Institute Sri Lanka (Incorporation) |
| 54/1992 : Suwa Sahana Sewa Foundation (Incorporation) |
| 18/2018 : 1990 Suwaseriya Foundation |
