Immigrants and Emigrants Act
27/2021 : Immigrants and Emigrants (Amendment) Not updated
7/2015 : Immigrants and Emigrants (Amendment) Not updated | 01 November 1949 |
| Imperial Lighthouse Service Goods (Rebate of Customs Duty) Ordinance | 21 December 1938 |
| Imports and Exports (Control) Act | 08 August 1969 |
| Imports and Exports Regulations (Validation) Act, No. 57 of 1971 | 28 December 1971 |
| Imposition of Civic Disabilities (Special Provisions) Act, No. 14 of 1965 | 16 November 1965 |
| Imposition Of Share Transaction Levy | 30 March 2005 |
| Income Tax Evasion and Non-disclosure of Profits and Income Act, No. 13 of 1964 | 28 August 1964 |
| Income Tax Ordinance | 9 February 1932 |
| Increase of Fines Act, No. 12 of 2005 | 11 May 2005 |
| Indemnity Act, No. 20 of 1982 | 20 May 1982 |
| Indian and Pakistani (Parliamentary Representation) Act (Repealed) | 14 August 1954 |
| Indian and Pakistani Residents (Citizenship) Act | 5 August 1949 |
| Indian Immigrant Labour Ordinance | 11 April 1923 |
| Indigenous Medicine Ordinance (Repealed) | 01 August 1941 |
| Indo-Ceylon Agreement (Implementation) Act | 15 November 1967 |
| Industrial Development Act | 29 January 1970 |
| Industrial Disputes (Hearing and Determination of Proceedings) (Special Provisions) Act, No. 13 of 2003 | 20 March 2003 |
| Industrial Disputes Act | 01 September 1951 |
| Industrial Disputes (Special Provisions) Act, No. 19 of 2022 | 23 June 2022 |
| Industrial Products Act | 21 November 1949 |
| Industrial Promotion Act, No. 46 of 1990 | 06 December 1990 |
| Industrial Security Foundation (Sri Lanka) (Incorporation) Act, No. 51 of 1999 | 14 December 1999 |
Information and Communication Technology Act, No, 27 of 2003
33/2008 : Information and Communication Technology (Amendment) Not updated | 09 September 2003 |
| Informers Reward Ordinance | 23 February 1914 |
Inland Revenue Act, No. 24 of 2017
14/2023 : Inland Revenue (Amendment) Not Updated
4/2023 : Inland Revenue (Amendment) Not Updated
45/2022 : Inland Revenue (Amendment) Not Updated
10/2021 : Inland Revenue (Amendment) Not Updated | 24 October 2017 |
Inland Revenue Act, No. 10 of 2006
9/2015 : Inland Revenue (Amendment) Not Updated
8/2014 : Inland Revenue (Amendment) Not Updated
18/2013 : Inland Revenue (Amendment) Not Updated
8/2012 : Inland Revenue (Amendment) Not Updated
19/2009 : Inland Revenue (Amendment) Not Updated
9/2008 : Inland Revenue (Amendment) Not Updated
10/2007 : Inland Revenue (Amendment) Not Updated | 2006 |
| Inland Revenue Act, No. 38 of 2000 | 2000 |
Inland Trust Receipts Act, No. 14 of 1990
22/2024 : Inland Trust Receipts (Amendment) Not updated | 1990 |
| Insolvency Ordinance | |
| Inspector of Labour (Change of Designation) Act, No. 7 of 1958 | 1958 |
| Institute of Applied Statistics, Sri Lanka (Incorporation) | 2011 |
| Institute of Automotive Engineers of Sri Lanka (Incorporation) Act, No. 48 of 1992 | 1992 |
| Institute of Bankers of Sri Lanka (Incorporation) Act | |
| Institute of Biology, Sri Lanka (Incorporation) Act, No. 22 of 1984 | 1984 |
| Institute of Chartered Accountants Act | |
| Institute of Certified Management Accountants of Sri Lanka | |
| Institute of Chartered Shipbrokers of Sri Lanka (Incorporation) | |
| Institute of Chemistry, Ceylon, Act | |
| Institute of Corporation Lawyers Law | |
| Institute of Dharuth Thowheed Assalafiyya (Incorporation) | |
| Institute of Environmental professionals, Sri Lanka (Incorporation) | |
| Institute of Engineering Diploma’s Sri Lanka (Incorporation) Act,. No- 64 of 1992 | 1992 |
Institute of Fundamental Studies Sri Lanka, Act, No. 55 of 1981
25/2014 : Institute of Fundamental Studies, Sri Lanka (Amendment) Not updated | 1981 |
| Institute of Geology, Sri Lanka (Incorporation) | |
| Institute of Management of Sri Lanka (Incorporation) Act, No. 67 of 1988 | 1988 |
| Institute of Mass Communication (Incorporation) Act, No. 55 of 1998. | 1998 |
Institute of Personnel Management, Sri Lanka, Law
31/2018 : Institute of Personnel Management, Sri Lanka (Amendment) Not updated | |
| Institute of Physics, Sri Lanka (Incorporation) Act, No. 12 of 1986 | 1986 |
Institute of Policy Studies of Sri Lanka Act, No. 53 of 1988
1/2014 : Institute of Policy Studies of Sri Lanka (Amendment) Not updated | 1988 |
| Institute of Project Managers (Incorporation) Sri Lanka | |
| Institute of Quantity Surveyors, Sri Lanka (Incorporation) | |
| Institute of Sinhala Culture (Incorporation) Act | |
| Institute of Supply and Materials’ Management, Sri Lanka,No. 3 of 1981 | 1981 |
| Institute of Surveying and Mapping Act | |
| Institute of Town Planners, Sri Lanka (Incorporation) Act, No. 23 of 1986 | 1986 |
Institute of Valuers of Sri Lanka Law
9/2019 : Institute of Valuers of Sri Lanka (Amendment) Not updated | |
| Institute of Western Music and Speech (Incorporation) Act, No. 44 of 1988 | 1988 |
| Institution of Engineers, Sri Lanka, Act | |
| Insurance (Special Provision) Act. | |
| Insurance Corporation | |
| Intellectual Property Act | |
| Interim Devaluation Allowance of Employees Act | |
| Intermeddlers with Suitors Ordinance | |
| International Convention for the Protection of All Persons from Enforced Disappearance Act | |
| International Covenant on Civil and Political Rights (ICCPR) Act | |
| International Development Association Agreement Act. | |
| International Finance Corporation Agreement Act. | |
| International Frendship. Educational. Cultural and Social Services Association (Incorporation) Act. No. 30 of 2000 | 2000 |
| International Institute of Theravadha (Incorporation) | |
| International shanthee dharma organisation (incorporation) Act No. 43 of 1999. | 1999 |
| International Society for Krishna Consciousness (Iskon)-Sri Lanka Branch (Incorporation) Act,No.69 of 1992 | 1992 |
| International Volunteer Friendship Association (Incorporation) Act. No. 5 of 2000 | 2000 |
| International Water Management Institute Act, No.6 of 1985 | 1985 |
| International Winged Bean (Dambala) Institute Act, No. 7 of 1982 | 1982 |
| Interpretation Ordinance | |
| Irish Free State (Change of Name) Ordinance | 17 May 1938 |
| Irrigation Ordinance | 01 November 1946 |
| Isha-athul Islam Home for the Orphans (Incorporation) Act, No. 34 of 1984 | 23 August 1984 |
| Islamic Service Society, Akurana (Incorporation) Act, No. 16 of 2000 | 29 May 2000 |
