United Nations International Seabed Authority
- Country: Jamaica
- Type: Organization
- Website: www.isa.org.jm
- Update: 05-02
The United Nations International Seabed Authority (International Seabed Authority; abbreviation: ISA) is an authoritative organization specializing in the management of the international seabed area and its resources, originating from the Preparatory Commission for the United Nations International Seabed Authority and for the International Tribunal for the Law of the Sea (abbreviation: Seabed Preparatory Commission), which was established in March 1983 and formally established on 16 November 1994 in Kingston, Jamaica. Kingston, Jamaica, on 16 November 1994.