UNO
- International Court of Justice in The Hague (ICJ)
www.icj-cij.org 
Accession: 29 March 1950
- Universal Postal Union (UPU)
www.upu.int
Accession: 13 April 1962
- International Telecommunication Union (ITU)
www.itu.int
Accession: 25 July 1963
- United Nations Conference on Trade and Development (UNCTAD)
www.unctad.org
Accession: 30 December 1964
- International Atomic Energy Agency (IAEA)
www.iaea.org
Accession: 11 November 1968
- World Intellectual Property Organization (WIPO)
www.wipo.org
Accession: 17 February 1972
- United Nations (UN)
www.un.org
Accession: 18 September 1990
- United Nations Economic Commission for Europe (ECE)
www.unece.org
Accession: 18 September 1990; consultative status beginning 3 April 1976
Europe
- European Conference of Postal and Telecommunications
www.cept.org
Accession: 13 September 1963
- Organization for Security and Cooperation in Europe
www.osce.org
Participating State in the former CSCE since 1 August 1975
- Council of Europe Development Bank
Accession: 1 January 1976
- Council of Europe
www.coe.int
Accession: 23 November 1978
- European Court for Human Rights (ECHR)
www.echr.coe.int
Accession: 9 September 1982
- European Patent Organization (EPO)
www.european-patent-office.org
Accession: Accession: 1 April 1980
- European Telecommunication Satellite Organization (EUTELSAT)
www.eutelsat.com
Accession: 4 February 1987
- European Free Trade Association (EFTA)
www.efta.int
Accession: 1 September 1991; previously special status beginning 3 May 1960
- European Bank for Reconstruction and Development (EBRD)
www.ebrd.com
Accession: 28 March 1991
- European Economic Area (EEA)
Accession: 1 May 1995
- European Conference of Ministers of Transport (ECMT)
Accession: 2000
Other International Organizations and Institutions
- International Criminal Police Organization (INTERPOL)
www.interpol.int
Accession: 1960
- International Telecommunication Satellite Organization (INTELSAT)
Accession: 20 August 1971
- International Union for Conservation of Nature and Natural Resources (IUCN)
www.iucn.org
Accession: 1 January 1982
- World Trade Organization (WTO)
www.wto.org
Accession: 1 September 1995
- International Olympic Committee (IOC)
www.olympic.org
Accession: 29 July 1935
International Organization with Headquarters in Liechtenstein
- International Commission for the Protection of the Alps (CIPRA)
The International Commission for the Protection of the Alps (CIPRA) was founded in 1952 and is a non-governmental umbrella organization with representations in the alpine countries. Over 100 associations and organizations from all seven alpine countries are members. Its headquarters are in Schaan in the Principality of Liechtenstein. The Government of Liechtenstein supports CIPRA annually with considerable financial contributions.
www.cipra.org
Bilateral and multilateral agreements
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