Ratified conventions by Niger
- 1961 - Convention Relating to the Status of Refugees
- 1964 - 2nd Geneva Convention For the Amelioration of the Condition of Wounded, Sick and Shipwrecked Members of Armed Forces at Sea
- 1964 - 3rd Geneva Convention Relative to the Treatment of Prisoners of War
- 1964 - 4th Geneva Convention relative to the protection of civilian persons in time of war
- 1964 - 1st Geneva Convention for the Amelioration of the Condition of the Wounded and Sick in Armed Forces in the Field
- 1970 - Protocol Relating to the Status of Refugees
- 1971 - Convention Governing the Specific Aspects of Refugee Problems in Africa
- 1978 - International Convention on the Suppression and Punishment of the Crime of Apartheid
- 1979 - Additional Protocol Relating to the Protection of Victims of International Armed Conflicts
- 1979 - Additional Protocol Relating to the Protection of Victims of Non-International Armed Conflicts
- 1985 - Convention on the Reduction of Statelessness
- 1986 - African Charter on Human and People's Rights
- 1986 - Optional Protocol to the International Covenant on Civil and Political Rights
- 1986 - International Covenant on Civil and Political Rights
- 1986 - International Covenant on Economic, Social and Cultural Rights
- 1990 - Convention on the Rights of the Child
- 1997 - International Convention for the Protection of All Persons from Enforced Disappearance
- 1998 - Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment
- 1999 - Convention on the Prohibition of the Use, Stockpilling, production and transfer and antipersonnel mines
- 2002 - Statute of the International Criminal Court
- 2003 - Convention on Cluster Munitions
- 2004 - Protocol on the Establishment of an African Court on Human and People's Rights
- 2004 - Optional Protocol on the Sale of Children, Child Prostitution, and Child Pornography
- 2007 - International Convention for the Protection of All Persons from Enforced Disappearance
- 2012 - Optional Protocol on the Involvement of Children in Armed Conflict
- 2014 - Convention Relating to the Status of Stateless Persons
- 2014 - Optional Protocol to the Convention against Torture and Other Cruel, Inhuman, or Degrading Treatment or Punishment
- Signature 2004 - Protocol to the African Charter on the Rights of Women in Africa