- United National Independence Party
- United National Party
- United Nation Conference on Desertification
- United Nation Economic Commission for Latin America and the Caribbean
- United Nations Centre for Human Rights
- United Nations Commission on International Trade Law
- United Nations Committee of Peaceful Uses of Outer Space
- United Nations Committee on the Peaceful Uses of Outer Space
- United Nations Conference on Environment and Development
- United Nations Conference on Environment Sustainable Development
- United Nations Conference on Housing and Sustainable Urban Development (HABITAT III)
- United Nations Conference on Human Settlements
- United Nations Conference on the Human Environment
- United Nations Conference on World Population
- United Nations Convention Against Corruption
- United Nations Convention against Corruption
- United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances
- United Nations Convention Against Transnational Organized Crime
- United Nations Convention on a Code of Conduct for Liner Conferences
- United Nations Convention on Carriage of Goods by Sea, 1978
- United Nations Convention on Contracts for the International Carriage of Goods Wholly or Partly by Sea
- United Nations Convention on Contracts for the International Sale of Goods
- United Nations Convention on Independent Guarantees and Stand-by Letters of Credit
- United Nations Convention on International Multimodal Transport of Goods
- United Nations Convention on the continental shelf