| Back to the Bible Broadcast Ceylon Act | 03 May 1972 |
| Badulla Saiva Paripalana Sangam Act | 24 March 1954 |
| Badulla Sri Saddharmananda Association (Incorporation) Act | 21 May 1982 |
| Badulla Subhasadhaka Sangamaya (Incorporation) Act | 21 June 1984 |
| Bahamas and Leeward Islands Light Dues Ordinance | 22 December 1934 |
| Bail Act | 28 November 1997 |
| Bakeer Markar Centre for National Unity (Incorporation) Act | 31 May 2000 |
| Balangoda Sri Sudarshana Vihara Wardhana Samithiya (Incorporation) Act | 30 March 1981 |
| Balapitiya Sri Rahularama Purana Viharastha Samanera Akalpa Sangwardena Bikshu Vidyalaya (Incorporated) | 01 November 2023 |
| Bambalapitiya Flats Buddhist Society (Incorporation) Act | 28 January 2008 |
| Bandaranaike Museum Committee (Incorporation) Act | 21 November 1997 |
| Bandarawela Suwamadu Suwasetha Suwasewa Nikethanaya of Sri Lanka (Incorporation) Act | 20 June 1994 |
| Bank of Ceylon Ordinance | 01 December 1938 |
| Banking (Special Provisions) Act | 22 November 2023 |
| Banking Act | 16 September 1990 |
| Batticaloa Waterworks Ordinance | 01 February 1925 |
| Batticaloa Young Men’s Hindu Association (Incorporation) Act | 31 July 1998 |
| Betting and Gaming Levy Act | 24 November 1988 |
| Betting on Horse-Racing Ordinance | 01 August 1930 |
| Bhagawan Sri Sathya Sai Seva Samithi Trust (Incorporation) Act | 31 March 1992 |
| Bhikku University of Sri Lanka Act | 17 October 1996 |
| Bibliomania Educational Books for the Nation Foundation (Incorporation) Act | 26 June 2009 |
| Bills of Exchange Ordinance | 01 March 1927 |
| Births and Deaths Registration Act | 01 August 1975 |
| Bloemendhal Development Society (Incorporation) Act | 21 June 1984 |
| Board of Directors of the Mahaweli Cultural Foundation Trust (Incorporation) Act | 06 May 2009 |
| Board of Directors of the Muslim Ladies Arabic College Kattankudy (Incorporation) Act | 12 June 2000 |
| Board of Directors of the Rehabilitation and Education Development Fund (Incorporation) Act | 14 December 1999 |
| Board of Investment of Sri Lanka Law | 09 March 1978 |
| Board of Management of the Ahadiya Academy (Incorporation) Act | 11 October 1984 |
| Board of Management of the Manfa-Ul-Hudha Arabic College (Incorporation) Act | 25 March 1992 |
| Board Of Management Of The Muslim Ladies Arabic College Managing Society, Kal-Eliya (Incorporation) | 17 December 1991 |
| Board of Trustees of the Al Hassaniyyah Arabic College Trust (Incorporation) Act | 21 June 1985 |
| Board of Trustees of the Bhagawan Sri Sathya Sai Central Trust of Sri Lanka (Incorporation) | 24 September 2007 |
| Board of Trustees of the Lalith Athulathmudali Educational Trust, Balangoda (Incorporation) Act | 23 October 1987 |
| Board of Trustees of the Ratmalana Historic Gonabendi Kataragama Maha Devalaya (Incorporation) Act | 25 March 1992 |
| Board of Trustees of the Ronnie De Mel-Ruhunu University-Trust (Incorporation) Act | 19 July 2000 |
| Board of Trustees of the S.W.R.D. Bandaranaike (Memorial) Scholarship Trust (Incorporation) Act | 19 April 1991 |
| Board of Trustees of Sihala Sarana Pin Ketaya (Incorporation) | 06 August 2009 |
| Board Of Trustees Of The Sri Maha Bathrakalee Devalaya (Incorporation) | 25 January 1991 |
| Boatmen Ordinance | 10 November 1880 |
| Boats Ordinance | 21 March 1900 |
| Bodirajarama Educational and Cultural Foundation (Incorporation) | 21 August 2014 |
| Bope Sudharmarama Purana Maha Vihara Sanwardhana Samitiya (Incorporation) Act | 30 November 1988 |
| Botanic Gardens Ordinance | 16 November 1928 |
| Brahma Kumaris Rajayoga Centre, Sri Lanka (Incorporation) Act | 22 June 1998 |
| Bread Ordinance | 01 January 1944 |
| Bretton Woods Agreements Act | 25 August 1950 |
| Bribery Act | 01 March 1954 |
| Brothels Ordinance | 28 June 1889 |
| Buddha Sasana Fund Act | 26 September 1990 |
| Buddha Sravaka Dharmapithaya Act | 31 May 1968 |
Buddhashrawaka Bhikshu University
15/2012 : Buddhasravaka Bhikku University (Amendment) Act Not updated | 17 October 1996 |
| Buddhist and Pali University of Sri Lanka Act | 15 December 1981 |
Buddhist Culture Centre of Nedimala Dehiwela (Incorporation)
50/2011 : Buddhist Cultural Center of Nedimala Dehiwala (Incorporation) (Amendment) Not updated | 07 August 2008 |
| Buddhist Publication Society Law | 17 July 1975 |
| Buddhist Temporalities Ordinance | 11 January 1931 |
| Budgetary Relief Allowance of Workers (No. 1) Law | 01 December 1977 |
| Budgetary Relief Allowance of Workers (No. 2) Law | 17 February 1977 |
| Budgetary Relief Allowance of Workers Act | 18 October 2005 |
| Budgetary Relief Allowance of Workers Act 4 of 2016 | 08 April 2016 |
| Bureau of Rehabilitation Act | 22 November 2023 |
| Business Names Ordinance | 07 November 1918 |
| Business Registration (Exemption from Surcharge) Act | 28 February 1968 |
| Business Registration (Surcharge) Act | 25 April 1961 |
| Business Undertakings (Acquisition) (Repeal) Act | 17 December 1988 |
| Butchers Ordinance | 15 January 1893 |
