| National planning council |
- |
- |
- |
1956 |
| Northern province teachers' association benevolent fund (incorporation) |
- |
- |
- |
1968 |
| Nindagama lands |
- |
- |
- |
1968 |
| National science council of ceylon (amendment) |
- |
- |
- |
1968 |
| National science council of ceylon |
- |
- |
- |
1968 |
| National savings bank |
- |
- |
- |
1971 |
| National apprenticeship |
- |
- |
- |
1971 |
| Notaries (amendment) |
- |
- |
- |
1973 |
| National archives law |
- |
- |
- |
1973 |
| National water supply and drainage board law |
- |
- |
- |
1974 |
| National science council of sri lanka law |
- |
- |
- |
1975 |
| National prices commission law |
- |
- |
- |
1975 |
| Naming of streets and the control of the erection of monuments law |
- |
- |
- |
1975 |
| National metric conversion law |
- |
- |
- |
1976 |
| Notaries (amendment) law |
- |
- |
- |
1976 |
| National institute of business management law |
- |
- |
- |
1976 |
| Navy (amendment) law |
- |
- |
- |
1976 |
| Newspapers (amendment) law |
- |
- |
- |
1976 |
| National housing development authority |
- |
- |
- |
1979 |
| Navy and air force (amendment) |
- |
- |
- |
1979 |
| National development bank of sri lanka |
- |
- |
- |
1979 |
| National institute of plantation management |
- |
- |
- |
1979 |
| National youth services |
- |
- |
- |
1979 |
| National film corporation of sri lanka (amendment) |
- |
- |
- |
1980 |
| National environmental |
- |
- |
- |
1980 |
| National arts council mahanuwara (incorporation) |
- |
- |
- |
1980 |
| National science council of sri lanka (amendment) |
- |
- |
- |
1980 |
| National health development fund |
- |
- |
- |
1981 |
| National archives (amendment) |
- |
- |
 |
1981 |
| National housing (amendment) |
- |
- |
|
1981 |
| National aquatic resources research and development agency |
- |
- |
|
1981 |
| National institute of plantation management (amendment) |
- |
- |
- |
1981 |
| Natural resources, energy and science authority of sri lanka act |
- |
- |
- |
1981 |
| Naleemiah institute of islamic studies society (incorporation) |
- |
- |
- |
1982 |
| National crafts council and allied institutions |
- |
- |
- |
1982 |
| National zoological gardens |
- |
- |
- |
1982 |
| Nation builders association (incorporation) |
- |
- |
- |
1982 |
| National housing development authority (amendment) |
- |
- |
- |
1982 |
| National savings bank (amendment) |
- |
- |
|
1982 |
| Newspapers (amendment) |
- |
- |
|
1983 |
| National dangerous drugs control board |
- |
- |
- |
1984 |
| National health development fund (amendment) |
- |
- |
- |
1984 |
| National institute of education |
- |
- |
- |
1985 |
| Nutrition society of sri lanka (incorporation) |
- |
- |
|
1985 |
| National defence fund |
- |
- |
- |
1985 |
| National council for mental health sahanaya (incorporation) |
- |
- |
- |
1986 |
| Navy (Amendment) |
- |
- |
- |
1986 |
| National film corporation trust for film artistes and technicians |
- |
- |
- |
1986 |
| National dangerous drugs control board (amendment) |
- |
- |
- |
1986 |
| National health development fund (amendment) |
- |
- |
- |
1987 |
| National savings bank (amendment) |
- |
- |
- |
1987 |
| National apprenticeship (amendment) |
- |
- |
- |
1987 |
| National institute of plantation management (amendment) |
- |
- |
- |
1987 |
| National apprenticeship (amendment) |
- |
- |
- |
1988 |
| National housing development authority (amendment) |
- |
- |
- |
1988 |
| National heritage wilderness areas |
- |
- |
- |
1988 |
| North lanka college of medical practitioners (incorporation) |
- |
- |
- |
1988 |
| National environmental (amendment) |
- |
- |
- |
1988 |
| Nursing homes (regulation) (amendment) |
- |
- |
- |
1988 |
| Nursing homes (regulation) (amendment) |
- |
- |
- |
1988 |
| National academy of sciences of sri lanka (incorporation) |
- |
- |
- |
1988 |
| National development bank of sri lanka (amendment) |
- |
- |
- |
1990 |
| National dangerous drugs control board (amendment) |
- |
- |
- |
1990 |
| National defence fund (amendment) |
- |
- |
- |
1991 |
| National Youth Hostel Association Of Sri Lanka (Incorporation) |
- |
- |
- |
1991 |
| National education commission |
- |
- |
- |
1991 |
| National institute of business management (amendment) |
- |
- |
- |
1991 |
| National transport commission |
- |
- |
- |
1991 |
| National, economic, social, educational and cultural foundation of sri lanka (incorporation) |
- |
- |
- |
1991 |
| National development bank of sri lanka (amendment) |
- |
- |
- |
1992 |
| National water supply and drainage board (amendment) |
- |
- |
- |
1992 |
| New young men's christian association, moratuwa (incorporation) |
- |
- |
- |
1992 |
| National institute of social development |
- |
- |
- |
1992 |
| Nugawela malagammana rajamaha vihara sanwardhana sabhawa (incorporation) |
- |
- |
- |
1992 |
| Navy (amendment) |
- |
- |
- |
1993 |
| National gem and jewellery authority |
- |
- |
- |
1993 |
| Notional savings bank (amendment) |
- |
- |
- |
1995 |
| National transport commission (amendment) |
- |
- |
- |
1996 |
| National aquatic resources research and development agency (amendment) |
- |
- |
- |
1996 |
| National security levy (amendment) |
- |
- |
- |
1996 |
| National crafts council and allied institutions (special provisions) |
- |
- |
- |
1996 |
| National human resources development council of sri lanka |
- |
- |
- |
1997 |
| National transport medical institute |
- |
- |
- |
1997 |
| National authority on teacher education |
- |
- |
- |
1997 |
| National security levy (amendment) |
- |
- |
- |
1997 |
| National security levy (amendment) |
- |
- |
- |
1998 |
| National child protection authority |
- |
- |
- |
1998 |
| National library and documentation services board |
- |
- |
- |
1998 |
| National aquaculture development authority of sri lanka |
- |
- |
- |
1998 |
| National institute of technical education of sri lanka |
- |
- |
- |
1998 |
| Navodaya foundation (incorporation) |
 |
- |
- |
1999 |
| National security levy (amendment) |
|
 |
- |
1999 |
| National savings bank (amendment) |
|
|
- |
1999 |
| National housing development authority (amendment) |
|
- |
- |
1999 |
| National development bank of sri lanka (amendment) |
|
|
- |
1999 |
| National institute of fisheries and nautical engineering |
|
|
- |
1999 |
| Navy (amendment) |
|
|
- |
1999 |
| National security levy (amendment) |
- |
- |
- |
2000 |
| National environmental (amendment) |
- |
- |
- |
2000 |
| National institute of co-operative development (incorporation) |
- |
- |
- |
2001 |
| National security levy |
- |
- |
- |
2001 |
| National security levy (amendment) |
- |
- |
- |
2002 |
| National housing development authority (amendment) |
- |
- |
- |
2002 |
| National housing development authority (amendment) |
|
|
- |
2003 |
| National institute of plantation management (amendment) |
|
|
- |
2003 |
| National development bank of sri lanka (consequential provisions) |
|
|
- |
2005 |
| National enterprise development authority |
|
|
- |
2006 |
| National aquaculture development authority of sri lanka (amendment) |
- |
- |
- |
2006 |
| National authority on tobacco and alcohol |
- |
- |
- |
2006 |
| National insurance trust fund |
- |
- |
- |
2006 |
| Nawalapitiya dharul uloom al hashimiya arabic college (incorporation) act |
|
|
|
2006 |
| National kidney foundation of sri lanka (incorporation) |
- |
- |
- |
2006 |
| National institute of language education and training |
|
|
- |
2007 |
| National insurance trust fund (amendment) |
|
|
- |
2007 |
| National thoroughfares act |
- |
- |
|
2008 |
| Nation building tax (amendment) |
|
|
- |
2009 |
| National institute of occupational safety and health |
|
|
- |
2009 |
| Nation building tax |
|
|
- |
2009 |
| National institute of labour studies |
|
|
|
2010 |
| Nation Building Tax (Amendment) |
|
|
|
2011 |
| Navy (amendment) |
|
|
|
2011 |
| National police academy |
|
|
|
2011 |
| Notaries (amendment) |
|
|
|
2011 |
| Nation building tax (amendment) |
|
|
|
2012 |
| Nation building tax (amendment) |
|
|
|
2013 |
| Notaries (amendment) |
|
|
|
2013 |
| Nation building tax (amendment) |
|
|
|
2014 |
| National enterprise development authority (amendment) |
|
|
|
2014 |
| Nimal siripala de silva foundation (incorporation) |
|
|
|
2014 |
| National institute of business management (amendment) |
|
|
|
2014 |
| Nineteenth amendment to the constitution |
|
|
|
2015 |
| Nation building tax (amendment) |
|
|
|
2015 |
| National Authority On Tobacco And Alcohol (Amendment) |
|
|
|
2015 |
| National Medicines Regulatory Authority |
|
|
|
2015 |
| National authority on teacher education (repeal) |
- |
- |
- |
2015 |
| National research council of sri lanka act |
|
|
|
2016 |
| Nation building tax (amendment) act |
|
|
|
2016 |
| National minimum wage of workers |
|
|
|
2016 |
| Nation building tax (amendment) act |
|
|
|
2017 |
| National transport commission (amendment) act |
|
|
|
2017 |
| National defence fund (amendment) act |
|
|
|
2018 |
| National audit act |
|
|
|
2018 |
| Nation building tax (amendment) act |
|
|
|
2018 |
| New villages development authority for plantation region act |
|
|
|
2018 |
| Nation building tax (amendment) act |
|
|
|
2019 |
| National innovation agency act |
|
|
|
2019 |
| Nation building tax (amendment) act |
|
|
|
2020 |
| National minimum wage of workers (amendment) act |
|
|
|
2021 |
| Notaries (amendment) act |
|
|
|
2022 |
| National eye bank trust of sri lanka act |
|
|
|
2023 |
| National minimum wage of workers (amendment) act |
|
|
|
2024 |
| Notaries (amendment) act |
|
|
|
2024 |
| National hydrographic act |
|
|
|
2024 |
| National minimum wage of workers (amendment) act |
|
|
|
2025 |
| National audit (amendment) act |
|
|
|
2025 |
| National building research institute act |
|
|
|
2025 |
| National transport commission (amendment) act |
|
|
|
2025 |