STATUS AS AT : 16-04-2020 05:00:48 EDT

The Vienna Convention on the Law of Treaties (VCLT) is a treaty concerning the international law on treaties between states. It was adopted on 22 May 1969[1] and opened for signature on 23 May 1969.[2] The Convention entered into force on 27 January 1980.[2]

As of January 2018, 116 state parties have ratified the convention, and a further 15 states have signed but have not ratified the convention.[3] In addition, the Republic of China (Taiwan), which is currently only recognized by 14 UN member states, signed the Convention in 1970 prior to the United Nations General Assembly‘s vote to transfer China’s seat to the People’s Republic of China (PRC) in 1971. When the PRC subsequently acceded to the Convention, they described the Republic of China’s (ROC) signature as “illegal”.[3] 65 UN member states have neither signed nor ratified the Convention.

State[3]

Signed

Deposited

Method

clip image001 - Vienna Convention on the Law of Treaties Albania

Jun 27, 2001

Accession

clip image002 1 - Vienna Convention on the Law of Treaties Algeria

Nov 8, 1988

Accession

clip image003 - Vienna Convention on the Law of Treaties Andorra

Apr 5, 2004

Accession

clip image004 1 - Vienna Convention on the Law of Treaties Argentina

May 23, 1969

Dec 5, 1972

Ratification

clip image005 - Vienna Convention on the Law of Treaties Armenia

May 17, 2005

Accession

clip image006 - Vienna Convention on the Law of Treaties Australia

Jun 13, 1974

Accession

clip image007 - Vienna Convention on the Law of Treaties Austria

Apr 30, 1979

Accession

clip image008 - Vienna Convention on the Law of Treaties Azerbaijan

Jan 11, 2018

Accession

clip image009 - Vienna Convention on the Law of Treaties Barbados

May 23, 1969

Jun 24, 1971

Ratification

clip image010 - Vienna Convention on the Law of Treaties Belarus

May 1, 1986

Accession as the clip image011 - Vienna Convention on the Law of Treaties Byelorussian SSR

clip image012 - Vienna Convention on the Law of Treaties Belgium

Sep 1, 1992

Accession

clip image013 - Vienna Convention on the Law of Treaties Benin

Nov 2, 2017

Accession

clip image014 - Vienna Convention on the Law of Treaties Bosnia and Herzegovina

Sep 1, 1993

Succession from clip image015 - Vienna Convention on the Law of Treaties Socialist Federal Republic of Yugoslavia

clip image016 - Vienna Convention on the Law of Treaties Brazil

May 23, 1969

Sep 25, 2009

Ratification

clip image017 - Vienna Convention on the Law of Treaties Bulgaria

Apr 21, 1987

Accession

clip image018 - Vienna Convention on the Law of Treaties Burkina Faso

May 25, 2006

Accession

clip image019 - Vienna Convention on the Law of Treaties Cameroon

Oct 23, 1991

Accession

clip image020 - Vienna Convention on the Law of Treaties Canada

Oct 14, 1970

Accession

clip image021 - Vienna Convention on the Law of Treaties Central African Republic

Dec 10, 1971

Accession

clip image022 - Vienna Convention on the Law of Treaties Chile

May 23, 1969

Apr 9, 1981

Ratification

clip image023 - Vienna Convention on the Law of Treaties China

Sep 3, 1997

Accession

clip image024 - Vienna Convention on the Law of Treaties Colombia

May 23, 1969

Apr 10, 1985

Ratification

clip image025 - Vienna Convention on the Law of Treaties Republic of the Congo

May 23, 1969

Apr 12, 1982

Ratification

clip image026 - Vienna Convention on the Law of Treaties Democratic Republic of the Congo

Jul 25, 1977

Accession as clip image027 - Vienna Convention on the Law of Treaties Zaire

clip image028 - Vienna Convention on the Law of Treaties Costa Rica

May 23, 1969

Nov 22, 1996

Ratification

clip image029 - Vienna Convention on the Law of Treaties Croatia

Oct 12, 1992

Succession from clip image015 1 - Vienna Convention on the Law of Treaties Socialist Federal Republic of Yugoslavia

clip image030 - Vienna Convention on the Law of Treaties Cuba

Sep 9, 1998

Accession

clip image031 - Vienna Convention on the Law of Treaties Cyprus

Dec 28, 1976

Accession

clip image032 - Vienna Convention on the Law of Treaties Czech Republic

Feb 22, 1993

Succession from clip image032 1 - Vienna Convention on the Law of Treaties Czechoslovakia

clip image033 - Vienna Convention on the Law of Treaties Denmark

Apr 18, 1970

Jun 1, 1976

Ratification

clip image034 - Vienna Convention on the Law of Treaties Dominican Republic

Apr 1, 2010

Accession

clip image035 - Vienna Convention on the Law of Treaties Ecuador

May 23, 1969

Feb 11, 2005

Ratification

clip image036 - Vienna Convention on the Law of Treaties Egypt

Feb 11, 1982

Accession

clip image037 - Vienna Convention on the Law of Treaties Estonia

Oct 21, 1991

Accession

clip image038 - Vienna Convention on the Law of Treaties Finland

May 23, 1969

Aug 19, 1977

Ratification

clip image039 - Vienna Convention on the Law of Treaties Gabon

Nov 5, 2004

Accession

clip image040 - Vienna Convention on the Law of Treaties Georgia

Jun 8, 1995

Accession

clip image041 - Vienna Convention on the Law of Treaties Germany

Apr 30, 1970

Jul 21, 1987

Ratification as clip image041 1 - Vienna Convention on the Law of Treaties West Germany
Also acceded by clip image042 - Vienna Convention on the Law of Treaties East Germany on 20 October 1986 prior to German reunification

clip image043 - Vienna Convention on the Law of Treaties Greece

Oct 30, 1974

Accession

clip image044 - Vienna Convention on the Law of Treaties Guatemala

May 23, 1969

Jul 21, 1997

Ratification

clip image045 - Vienna Convention on the Law of Treaties Guinea

Sep 16, 2005

Accession

clip image046 - Vienna Convention on the Law of Treaties Guyana

May 23, 1969

Sep 15, 2005

Ratification

clip image047 - Vienna Convention on the Law of Treaties Haiti

Aug 25, 1980

Accession

clip image048 - Vienna Convention on the Law of Treaties  Holy See

Sep 30, 1969

Feb 25, 1977

Ratification

clip image049 - Vienna Convention on the Law of Treaties Honduras

May 23, 1969

Sep 20, 1979

Ratification

clip image050 - Vienna Convention on the Law of Treaties Hungary

Jun 19, 1987

Accession

clip image051 - Vienna Convention on the Law of Treaties Ireland

Aug 7, 2006

Accession

clip image052 - Vienna Convention on the Law of Treaties Italy

Apr 22, 1970

Jul 25, 1974

Ratification

clip image053 - Vienna Convention on the Law of Treaties Jamaica

May 23, 1969

Jul 28, 1970

Ratification

clip image054 - Vienna Convention on the Law of Treaties Japan

Jul 2, 1981

Accession

clip image055 - Vienna Convention on the Law of Treaties Kazakhstan

Jan 5, 1994

Accession

clip image056 - Vienna Convention on the Law of Treaties Kiribati

Sep 15, 2005

Accession

clip image057 - Vienna Convention on the Law of Treaties South Korea

Nov 27, 1969

Apr 27, 1977

Ratification

clip image058 - Vienna Convention on the Law of Treaties Kuwait

Nov 11, 1975

Accession

clip image059 - Vienna Convention on the Law of Treaties Kyrgyzstan

May 11, 1999

Accession

clip image060 - Vienna Convention on the Law of Treaties Laos

Mar 31, 1998

Accession

clip image061 - Vienna Convention on the Law of Treaties Latvia

May 4, 1993

Accession

clip image062 - Vienna Convention on the Law of Treaties Lesotho

Mar 3, 1972

Accession

clip image063 - Vienna Convention on the Law of Treaties Liberia

May 23, 1969

Aug 29, 1985

Ratification

clip image064 - Vienna Convention on the Law of Treaties Libya

Dec 22, 2008

Accession as the clip image065 - Vienna Convention on the Law of Treaties Libyan Arab Jamahiriya

clip image066 - Vienna Convention on the Law of Treaties Liechtenstein

Feb 8, 1990

Accession

clip image067 - Vienna Convention on the Law of Treaties Lithuania

Jan 15, 1992

Accession

clip image068 - Vienna Convention on the Law of Treaties Luxembourg

Sep 4, 1969

May 23, 2003

Ratification

clip image069 - Vienna Convention on the Law of Treaties Malawi

Aug 23, 1983

Accession

clip image070 - Vienna Convention on the Law of Treaties Malaysia

Jul 27, 1994

Accession

clip image071 - Vienna Convention on the Law of Treaties Maldives

Sep 14, 2005

Accession

clip image072 - Vienna Convention on the Law of Treaties Mali

Aug 31, 1998

Accession

clip image073 - Vienna Convention on the Law of Treaties Malta

Sep 26, 2012

Accession

clip image074 - Vienna Convention on the Law of Treaties Mauritius

Jan 18, 1973

Accession

clip image075 - Vienna Convention on the Law of Treaties Mexico

May 23, 1969

Sep 25, 1974

Ratification

clip image076 - Vienna Convention on the Law of Treaties Moldova

Jan 26, 1993

Accession

clip image077 - Vienna Convention on the Law of Treaties Mongolia

May 16, 1988

Accession

clip image078 - Vienna Convention on the Law of Treaties Montenegro

Oct 23, 2006

Succession from  Serbia and Montenegro

clip image079 - Vienna Convention on the Law of Treaties Morocco

May 23, 1969

Sep 26, 1972

Ratification

clip image080 - Vienna Convention on the Law of Treaties Mozambique

May 8, 2001

Accession

clip image081 - Vienna Convention on the Law of Treaties Myanmar

Sep 16, 1998

Accession

clip image082 - Vienna Convention on the Law of Treaties Nauru

May 5, 1978

Accession

clip image083 - Vienna Convention on the Law of Treaties Netherlands

Apr 9, 1985

Accession

clip image084 - Vienna Convention on the Law of Treaties New Zealand

Apr 29, 1970

Aug 4, 1971

Ratification

clip image085 - Vienna Convention on the Law of Treaties Niger

Oct 27, 1971

Accession

clip image086 - Vienna Convention on the Law of Treaties Nigeria

May 23, 1969

Jul 31, 1969

Ratification

clip image087 - Vienna Convention on the Law of Treaties North Macedonia

Jul 8, 1999

Succession from clip image015 2 - Vienna Convention on the Law of Treaties Socialist Federal Republic of Yugoslavia

clip image088 - Vienna Convention on the Law of Treaties Oman

Oct 18, 1990

Accession

clip image089 - Vienna Convention on the Law of Treaties Panama

Jul 28, 1980

Accession

clip image090 - Vienna Convention on the Law of Treaties Paraguay

Feb 3, 1972

Accession

clip image091 - Vienna Convention on the Law of Treaties Peru

May 23, 1969

Sep 14, 2000

Ratification

clip image092 - Vienna Convention on the Law of Treaties Philippines

May 23, 1969

Nov 15, 1972

Ratification

clip image093 - Vienna Convention on the Law of Treaties Poland

Jul 2, 1990

Accession

clip image094 - Vienna Convention on the Law of Treaties Portugal

Feb 6, 2004

Accession

clip image095 - Vienna Convention on the Law of Treaties Russia

Apr 29, 1986

Accession as the clip image096 - Vienna Convention on the Law of Treaties Soviet Union

clip image097 - Vienna Convention on the Law of Treaties Rwanda

Jan 3, 1980

Accession

clip image098 - Vienna Convention on the Law of Treaties Saudi Arabia

Apr 14, 2003

Accession

clip image099 - Vienna Convention on the Law of Treaties Senegal

Apr 11, 1986

Accession

clip image100 - Vienna Convention on the Law of Treaties Serbia

Mar 12, 2001

Succession as  Federal Republic of Yugoslavia from clip image015 3 - Vienna Convention on the Law of Treaties Socialist Federal Republic of Yugoslavia

clip image101 - Vienna Convention on the Law of Treaties Slovakia

May 28, 1993

Succession from clip image032 2 - Vienna Convention on the Law of Treaties Czechoslovakia

clip image102 - Vienna Convention on the Law of Treaties Slovenia

Jul 6, 1992

Succession from clip image015 4 - Vienna Convention on the Law of Treaties Socialist Federal Republic of Yugoslavia

clip image103 - Vienna Convention on the Law of Treaties Solomon Islands

Aug 9, 1989

Accession

clip image104 - Vienna Convention on the Law of Treaties Spain

May 16, 1972

Accession

clip image105 - Vienna Convention on the Law of Treaties St. Vincent and the Grenadines

Apr 27, 1999

Accession

clip image106 - Vienna Convention on the Law of Treaties Palestine

Apr 2, 2014

Accession

clip image107 - Vienna Convention on the Law of Treaties Sudan

May 23, 1969

Apr 18, 1990

Ratification

clip image108 - Vienna Convention on the Law of Treaties Suriname

Jan 31, 1991

Accession

clip image109 - Vienna Convention on the Law of Treaties Sweden

Apr 23, 1970

Feb 4, 1975

Ratification

clip image110 - Vienna Convention on the Law of Treaties  Switzerland

May 7, 1990

Accession

clip image111 - Vienna Convention on the Law of Treaties Syria

Oct 2, 1970

Accession

clip image112 - Vienna Convention on the Law of Treaties Tajikistan

May 6, 1996

Accession

clip image113 - Vienna Convention on the Law of Treaties Tanzania

Apr 12, 1976

Accession

clip image114 - Vienna Convention on the Law of Treaties Timor-Leste

Jan 8, 2013

Accession

clip image115 - Vienna Convention on the Law of Treaties Togo

Dec 28, 1979

Accession

clip image116 - Vienna Convention on the Law of Treaties Tunisia

Jun 23, 1971

Accession

clip image117 - Vienna Convention on the Law of Treaties Turkmenistan

Jan 4, 1996

Accession

clip image118 - Vienna Convention on the Law of Treaties Ukraine

May 14, 1986

Accession as the clip image119 - Vienna Convention on the Law of Treaties Ukrainian SSR

clip image120 - Vienna Convention on the Law of Treaties United Kingdom

Apr 20, 1970

Jun 25, 1971

Ratification

clip image121 - Vienna Convention on the Law of Treaties Uruguay

May 23, 1969

Mar 5, 1982

Ratification

clip image122 - Vienna Convention on the Law of Treaties Uzbekistan

Jul 12, 1995

Accession

clip image123 - Vienna Convention on the Law of Treaties Vietnam

Oct 10, 2001

Accession

List of signatories that have not ratified[edit]

State[3]

Signed

clip image124 - Vienna Convention on the Law of Treaties Afghanistan

May 23, 1969

clip image125 - Vienna Convention on the Law of Treaties Bolivia

May 23, 1969

clip image126 - Vienna Convention on the Law of Treaties Cambodia

May 23, 1969

clip image127 - Vienna Convention on the Law of Treaties Côte d’Ivoire

Jul 23, 1969

clip image128 - Vienna Convention on the Law of Treaties El Salvador

Feb 16, 1970

clip image129 - Vienna Convention on the Law of Treaties Ethiopia

Apr 30, 1970

clip image130 - Vienna Convention on the Law of Treaties Ghana

May 23, 1969

clip image131 - Vienna Convention on the Law of Treaties Iran

May 23, 1969

clip image132 - Vienna Convention on the Law of Treaties Kenya

May 23, 1969

clip image133 - Vienna Convention on the Law of Treaties Madagascar

May 23, 1969

clip image134 - Vienna Convention on the Law of Treaties   Nepal

May 23, 1969

clip image135 - Vienna Convention on the Law of Treaties Pakistan

Apr 29, 1970

clip image136 - Vienna Convention on the Law of Treaties Trinidad and Tobago

May 23, 1969

clip image137 - Vienna Convention on the Law of Treaties United States

Apr 24, 1970

clip image138 - Vienna Convention on the Law of Treaties Zambia

May 23, 1969

Partially recognized state

The Republic of China (Taiwan), which is currently only recognized by 14 UN member states, signed the treaty prior to the United Nations General Assembly‘s vote to transfer China’s seat to the People’s Republic of China (PRC) in 1971. When the PRC subsequently acceded the treaty, they described the Republic of China’s (ROC) signature as “illegal”.[3]

State[3]

Signed

clip image139 - Vienna Convention on the Law of Treaties Republic of China

Apr 27, 1970

References[edit]

    1. ^ untreaty.un.org, Law of treaties Archived 2013-10-17 at the Wayback Machine, International Law Commission, last update: 30 June 2005. Consulted on 7 December 2008.
    2. Jump up to:a b Vienna Convention on the Law of Treaties, pg. 1
    3. Jump up to:a b c d e f “Vienna Convention on the Law of Treaties”United Nations Treaty Series. Retrieved 23 July 2013.

stakeholders 7 2x - Vienna Convention on the Law of Treaties