Ratified conventions by Sri Lanka
- 1950 - Convention on the Prevention and Punishment of the Crime of Genocide
- 1959 - 1st Geneva Convention for the Amelioration of the Condition of the Wounded and Sick in Armed Forces in the Field
- 1959 - 2nd Geneva Convention For the Amelioration of the Condition of Wounded, Sick and Shipwrecked Members of Armed Forces at Sea
- 1959 - 3rd Geneva Convention Relative to the Treatment of Prisoners of War
- 1959 - 4th Geneva Convention relative to the protection of civilian persons in time of war
- 1977 - Optional Protocol to the International Covenant on Civil and Political Rights
- 1980 - International Covenant on Economic, Social and Cultural Rights
- 1980 - International Covenant on Civil and Political Rights
- 1981 - Convention on the Elimination of all Forms of Discrimination against Women
- 1982 - International Convention of the Elimination of All Forms of Racial Discrimination
- 1982 - International Convention on the Suppression and Punishment of the Crime of Apartheid
- 1991 - Convention on the Rights of the Child
- 1994 - Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment
- 1994 - Convention on the Prohibition of the development, production, stockpilling and use of chemical weapons
- 2000 - Optional Protocol on the Involvement of Children in Armed Conflict
- 2006 - Optional Protocol on the Sale of Children, Child Prostitution, and Child Pornography