LAW OF TREATIES
Vienna Convention on the Law of Treaties between States and International Organizations or between International Organizations
- Reference
- XXIII-3
- Adopted
- Vienna, 21 March 1986
- Signatories
- 39
- Parties
- 45
- Depositary record
- United Nations Treaty Collection
- 39 signed
- 45 ratified or acceded
- 66 participants listed
Who signed, and when
| Country | Signature | Ratification, acceptance, approval or accession |
|---|---|---|
| Albania | - | 8 May 2014 a |
| Argentina | 12 Feb 1987 | 17 Aug 1990 |
| Australia | - | 16 Jun 1993 a |
| Austria | 21 Mar 1986 | 26 Aug 1987 |
| Belarus | - | 30 Dec 1999 a |
| Belgium | 9 Jun 1987 | 1 Sep 1992 |
| Benin | 24 Jun 1987 | - |
| Bosnia and Herzegovina | 12 Jan 1994 d | - |
| Brazil | 21 Mar 1986 | - |
| Bulgaria | - | 10 Mar 1988 a |
| Burkina Faso | 21 Mar 1986 | - |
| Colombia | - | 24 Jul 2009 a |
| Council of Europe | 11 May 1987 | - |
| Croatia | - | 11 Apr 1994 a |
| Cyprus | 29 Jun 1987 | 5 Nov 1991 |
| Czech Republic | - | 22 Feb 1993 d |
| Côte d'Ivoire | 21 Mar 1986 | - |
| Democratic Republic of the Congo | 21 Mar 1986 | - |
| Denmark | 8 Jun 1987 | 26 Jul 1994 |
| Egypt | 21 Mar 1986 | - |
| Estonia | - | 21 Oct 1991 a |
| Food and Agriculture Organization of the United Nations | 29 Jun 1987 | - |
| Gabon | - | 5 Nov 2004 a |
| Germany | 27 Apr 1987 | 20 Jun 1991 |
| Greece | 15 Jul 1986 | 28 Jan 1992 |
| Hungary | - | 17 Aug 1988 a |
| International Atomic Energy Agency | - | 26 Apr 2001 a |
| International Civil Aviation Organization | 29 Jun 1987 | 24 Dec 2001 c |
| International Criminal Police Organization | - | 3 Jan 2001 a |
| International Labour Organisation | 31 Mar 1987 | 31 Jul 2000 c |
| International Maritime Organization | 30 Jun 1987 | 14 Feb 2000 c |
| International Telecommunication Union | 29 Jun 1987 | - |
| Italy | 17 Dec 1986 | 20 Jun 1991 |
| Japan | 24 Apr 1987 | - |
| Liberia | - | 16 Sep 2005 a |
| Liechtenstein | - | 8 Feb 1990 a |
| Malawi | 30 Jun 1987 | - |
| Malta | - | 26 Sep 2012 a |
| Mexico | 21 Mar 1986 | 10 Mar 1988 |
| Montenegro | 23 Oct 2006 d | - |
| Morocco | 21 Mar 1986 | - |
| Netherlands (Kingdom of the) | 12 Jun 1987 | 18 Sep 1997 |
| Organisation for the Prohibition of Chemical Weapons | - | 2 Jun 2000 a |
| Portugal | - | 21 Jul 2021 a |
| Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization | - | 11 Jun 2002 a |
| Republic of Korea | 29 Jun 1987 | - |
| Republic of Moldova | - | 26 Jan 1993 a |
| Senegal | 9 Jul 1986 | 6 Aug 1987 |
| Serbia | 12 Mar 2001 d | - |
| Slovakia | - | 28 May 1993 d |
| Spain | - | 24 Jul 1990 a |
| State of Palestine | - | 22 Mar 2018 a |
| Sudan | 21 Mar 1986 | - |
| Sweden | 18 Jun 1987 | 10 Feb 1988 |
| Switzerland | - | 7 May 1990 a |
| United Kingdom of Great Britain and Northern Ireland | 24 Feb 1987 | 20 Jun 1991 |
| United Nations | 30 Jan 1987 | 21 Dec 1998 c |
| United Nations Educational, Scientific and Cultural Organization | 23 Jun 1987 | - |
| United Nations Industrial Development Organization | - | 4 Mar 2002 a |
| United States of America | 26 Jun 1987 | - |
| Universal Postal Union | - | 19 Oct 2004 a |
| Uruguay | - | 10 Mar 1999 a |
| World Health Organization | 30 Apr 1987 | 22 Jun 2000 c |
| World Intellectual Property Organization | - | 24 Oct 2000 a |
| World Meteorological Organization | 30 Jun 1987 | - |
| Zambia | 21 Mar 1986 | - |
Participants that are UN member states link to their profile. The Holy See, the European Union, the Cook Islands and Niue appear in these tables and are not member states, so they are named without a link rather than attached to the nearest match. The third column carries the depositary’s own annotation. Accession, succession and acceptance are legally distinct from ratification and are shown as the record states them rather than flattened into one word.
Counts verified against the depositary’s own totals for this treaty before publication. The United Nations Treaty Collection is the authority; this page is a readable copy and may lag it.