The Republic of Trinidad and Tobago was admitted to the United Nations by the General Assembly on September 18, 1962, as advised by the United Nations Security Council Resolution 175.
Several United Nations organisations are physically based in Trinidad and Tobago including:
- Economic Commission for Latin America and the Caribbean (ECLAC) (Caribbean Office)
- International Labour Organization (ILO) (Caribbean Office)
- Joint United Nations Programme on HIV/AIDS (UNAIDS) (Caribbean Office)
- United Nations Information Centre (UNIC) (Caribbean Office)