group=note|name=state|Unless otherwise specified, this is the current state for which the treaty is in force. If the ratifying state is different than the current state, this is noted in a footnote. Italicised states have ceased to exist with no legal successor. Dates which have been struck and have a "(W)" are ratifications that have been subsequently withdrawn. | (I)[1] | (II)[2] | (III)[3] | (IV,1)[4] | (IV,2)[5] | (IV,3)[6] | | Argentina}} | 1907 | 1907 | 1907 | – | – | – |
| Australia}} | 1960 | – | – | – | – | – |
| {{flag>Austria-Hungary}}{{refn|group=note|name=AH|Ceased to be a state on 11 November 1918.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Austria}} | 1918 | 1918 | 1918 | – | 1918 | 1918 |
| Belarus}}{{refn|group=note|name=Belarus|Ratified as the {{flag|Byelorussian SSR}}.}} | 1962 | 1962 | 1962 | – | 1962 | 1962 |
| Belgium}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Bolivia}} | 1907 | 1907 | 1907 | – | – | – |
| Brazil}} | 1907 | 1907 | 1907 | – | – | – |
| Bulgaria}}{{refn|group=note|name=Bulgaria|Ratified as the Principality of Bulgaria.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Burkina Faso}} | 1961 | – | – | – | – | – |
| Cambodia}} | 1956 | – | – | – | – | – |
| Cameroon}} | 1961 | – | – | – | – | – |
| Canada}} | 1960 | – | – | – | – | – |
| Chile}} | 1907 | 1907 | 1907 | – | – | – |
| China}}{{refn|group=note|name=Qing|During the {{flag|Qing Dynasty}}.}} | 1904 | 1907 | 1904 | 1904 | 1904 | 1904 |
| Colombia}} | 1907 | 1907 | 1907 | – | – | – |
| Croatia}} | 1998 | – | – | – | – | – |
| Cuba}} | 1907 | 1907 | 1907 | – | – | – |
| Democratic Republic of the Congo}} | 1961 | – | – | – | – | – |
| Denmark}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Dominican Republic}} | 1907 | 1907 | 1907 | – | – | – |
| Ecuador}} | 1907 | 1907 | 1907 | – | – | – |
| El Salvador}} | 1907 | 1902 | 1902 | – | – | – |
| Ethiopia}} | 2003 | – | – | – | group=note|name=Ethiopia|Ratified as "Abyssinia" by the {{flag|Ethiopian Empire}}.}} | group=note|name=Ethiopia}} |
| Fiji}} | 1973 | 1973 | 1973 | – | 1973 | 1973 |
| France}}{{refn|group=note|name=France|Ratified as the government of the French Third Republic.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Germany}}{{refn|group=note|name=Germany|Ratified as the {{flag|German Empire}}.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Greece}}{{refn|group=note|name=Greece|Ratified as the {{flag|Kingdom of Greece}}.}} | 1901 | 1901 | 1901 | 1901 | 1901 | 1901 |
| Guatemala}} | 1907 | 1906 | 1903 | – | – | – |
| Haiti}} | 1907 | 1907 | 1907 | – | – | – |
| Honduras}} | 1961 | 1906 | 1906 | – | – | – |
| Hungary}} | 1918 | 1918 | 1918 | – | 1918 | 1918 |
| India}} | 1950 | 1950 | 1950 | – | 1950 | 1950 |
| Iran}}{{refn|group=note|name=Iran|Ratified as "Persia" by the {{flagicon|Iran|1925}} Qajar dynasty government.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Iraq}} | 1970 | – | – | – | – | – |
| Italy}}{{refn|group=note|name=Italy|Ratified as the {{flag|Kingdom of Italy}}.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Japan}}{{refn|group=note|name=Japan|Ratified as the Empire of Japan.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| South Korea}}{{refn|group=note|Ratified as the {{flag|Korean Empire}}.}} | – | 1903 | 1903 | – | – | – |
| Kyrgyzstan}} | 1992 | – | – | – | – | – |
| Laos}} | 1955 | 1955 | – | – | – | – |
| Lebanon}} | 1968 | – | – | – | – | – |
| Luxembourg}} | 1901 | 1901 | 1901 | 1901 | 1901 | 1901 |
| Republic of Macedonia}} | 2000 | – | – | – | – | – |
| Mauritius}} | 1970 | – | – | – | – | – |
| Mexico}} | 1901 | 1901 | 1901 | 1901 | 1901 | 1901 |
| {{flag>Principality of Montenegro}}{{refn|group=note|name=Montenegro|Ceased to be a state on 28 November 1918.}} | 1901 | 1900 | 1900 | 1900 | 1900 | 1901 |
| Montenegro}} | 2007 | 2007 | 2007 | – | 2007 | 2007 |
| Netherlands}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| New Zealand}} | 1959 | – | – | – | – | – |
| Nicaragua}} | 1907 | 1907 | 1907 | – | 1907 | 1907 |
| Norway}} | 1905 | 1907 | 1905 | 1905 | 1905 | 1905 |
| Pakistan}} | 1950 | 1950 | 1950 | – | 1950 | 1950 |
| Panama}} | 1907 | 1907 | 1907 | – | – | – |
| Paraguay}} | 1907 | 1906 | 1907 | – | – | – |
| Peru}} | 1907 | 1903 | 1903 | – | – | – |
| Portugal}}{{refn|group=note|Ratified as the {{flag|Kingdom of Portugal}}.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1907 |
| Romania}}{{refn|group=note|name=Romania|Ratified as the Kingdom of Romania.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Russia}}{{refn|group=note|name=Russia|Ratified as the Russian Empire. Ratifications were recognized by the Soviet Union "to the extent that the said Conventions and Declarations do not conflict with the Charter of the United Nations and provided that they have not been amended or superseded by subsequent international agreements to which the USSR is a party, such as the 1925 Geneva Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Similar Gases and of Bacteriological Means and the 1949 Geneva Conventions for the Protection of Victims of War."}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Senegal}} | 1977 | – | – | – | – | – |
| Serbia}}{{refn|group=note|Ratified as the {{flagicon|Serbia and Montenegro}} Federal Republic of Yugoslavia.}} | 2001 | 2001 | 2001 | – | 2001 | 2001 |
| Slovenia}} | 1996 | – | – | – | – | – |
| South Africa}} | – | 1978 | 1978 | – | 1978 | 1978 |
| Spain}}{{refn|group=note|name=Spain|By the government of Spain under the Restoration.}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Sri Lanka}} | 1955 | – | – | – | – | – |
| {{flag>United Kingdoms of Sweden and Norway}}{{refn|group=note|Ceased to be a state on 7 June 1905.}} | 1900 | S | 1900 | 1900 | 1900 | 1900 |
| Sweden}} | 1905 | 1907 | 1905 | 1905 | 1905 | 1905 |
| Switzerland}} | 1900 | 1907 | 1900 | 1900 | 1900 | 1900 |
| Thailand}}{{refn|group=note|name=Thailand|Ratified as "Siam".}} | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Turkey}}{{refn|group=note|name=Turkey|Ratified as the {{flag|Ottoman Empire}}.}} | 1907 | 1907 | 1907 | S | 1907 | 1907 |
| Ukraine}}{{refn|group=note|name=Ukraine|The {{flag|Ukrainian SSR}} recognized the conventions ratified by the Russian Empire, "to the extent that the said Conventions do not conflict with the Charter of the United Nations." In 2015, Ukraine declared, it considered itself bound from its independence in 1991 by way of succession to the conventions in force for the Soviet Union in the format and scape as envioned by (...) the USSR.}} | 1962 | 1991 | 1991 | 1991 | 1991 | 1991 |
| United Kingdom}}{{refn|group=note|name=UK|Ratified as the United Kingdom of Great Britain and Ireland.}} | 1900 | 1900 | 1900 | – | 1907 | 1907 |
| United States}} | 1900 | 1902 | 1900 | S | – | – |
| Uruguay}} | 1907 | 1906 | 1906 | – | – | – |
| Venezuela}} | 1907 | 1907 | 1907 | – | – | – |
| Vietnam}} | 2011 | – | – | – | – | – |
| {{flag>Socialist Federal Republic of Yugoslavia}}{{refn|group=note|name=Yugo|Ratified as the Kingdom of Serbia. Yugoslavia indicated that it considered itself to bound by the ratifications of the Kingdom of Serbia. Ceased to be a state on 28 April 1992.}} | 1901 | 1901 | 1901 | 1901 | 1901 | 1901 |
| Zimbabwe}} | 1984 | – | – | – | – | – |
| group=note|name=totals|Excludes states which ratified but subsequently withdrew ratification or ceased to exist | 71 | 54 | 53 | group=note|24 parties when the treaty lapsed. | 35 | 35 |
|---|
| group=note|name = state | (I)[7] | (II)[8] | (III)[9] | (IV)[10] | (V)[11] | (VI)[12] | (VII)[13] | (VIII)[14] | (IX)[15] | (X)[16] | (XI)[17] | (XII)[18] | (XIII)[19] | (XIV)[20] | | Albania}} | 2011 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Argentina}} | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Australia}} | 1996 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| {{flag>Austria-Hungary}}{{refn|group=note|name=AH}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | – | 1909 | S |
| Austria}} | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | – | 1918 | – |
| Bahamas}} | 2016 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Bahrain}} | 2008 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Bangladesh}} | 2011 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Belarus}}{{refn|group=note|name=Belarus}} | 1962 | 1962 | 1962 | 1962 | 1962 | 1962 | 1962 | – | 1962 | 1962 | – | – | 1962 | – |
| Belgium}} | 1910 | – | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | 1910 |
| Belize}} | 2002 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Benin}} | 2005 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Bolivia}} | 1909 | S | 1909 | 1909 | 1909 | – | S | S | 1909 | 1909 | S | S | S | 1909 |
| Brazil}} | 1914 | – | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | S | 1914 | 1914 |
| Bulgaria}} | 2000 | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | – | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} | group=note|name=Bulgaria}} |
| Burkina Faso}} | 1961 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Cambodia}} | 1956 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Cameroon}} | 1961 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Canada}} | 1994 | – | – | 1909 | – | – | – | – | – | – | – | – | – | – |
| Chile}} | 1997 | S | S | S | S | S | S | S | S | S | S | S | S | – |
| China}} | group=note|name=Qing}} | group=note|name=Qing}} | group=note|name=Qing}} | group=note|name=ROC|Ratified as the {{flagicon|Republic of China (1912–1949)|1912}} Republic of China government.}} | group=note|name=Qing}} | group=note|name=ROC}} | group=note|name=ROC}} | group=note|name=ROC}} | group=note|name=Qing}} | group=note|name=Qing}} | group=note|name=ROC}} | – | group=note|name=Qing}} | group=note|name=Qing}} |
| Colombia}} | 1997 | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Costa Rica}} | 1999 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Cuba}} | 1912 | S | S | 1912 | 1912 | 1912 | S | – | 1912 | 1912 | S | S | – | S |
| Cyprus}} | 1993 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| {{flag>Czechoslovakia}}{{refn|group=note|Ceased to be a state on 1 January 1993.}} | 1922 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Czech Republic}} | 1993 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Democratic Republic of the Congo}} | 1961 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Denmark}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | S | 1909 | – |
| Djibouti}} | 2016 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Dominican Republic}} | 1958 | S | S | 1958 | S | S | – | S | S | S | S | – | S | S |
| Ecuador}} | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| El Salvador}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | S | 1909 | 1909 |
| Egypt}}{{refn|group=note|name=EGY|Ratified as the United Arab Republic}} | 1968 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Eritrea}} | 1997 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Estonia}} | 2003 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Ethiopia}}{{refn|group=note|name=Ethiopia}} | – | – | 1935 | 1935 | 1935 | 1935 | 1935 | 1935 | 1935 | 1935 | 1935 | – | 1935 | 1935 |
| Fiji}} | – | 1973 | 1973 | 1973 | – | – | 1973 | 1973 | 1973 | – | 1973 | – | – | 1973 |
| Finland}} | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | – | 1922 | 1922 |
| France}}{{refn|group=note|name=France}} | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 (W) | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | – |
| Georgia}} | 2015 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Germany}}{{refn|group=note|name=Germany}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | S | 1909 | – |
| {{flag>East Germany}}[21]{{refn|group=note|name=DDR|Ceased to be a state on 3 October 1990.}} | 1974 | – | (1959){{refn>group=note|name=DDRnonrec}} | (1959){{refn>group=note|name=DDRnonrec|East Germany (DDR) indicated in 1959 that the treaty would continue to be applied to them, but the Netherlands, as the depositary, did not recognize the DDR until 1973.[22]}} | (1959){{refn>group=note|name=DDRnonrec}} | (1959){{refn>group=note|name=DDRnonrec}} | (1959){{refn>group=note|name=DDRnonrec}} | – | (1959){{refn>group=note|name=DDRnonrec}} | – | – | – | (1959){{refn>group=note|name=DDRnonrec}} | – |
| Greece}}{{refn|group=note|name=Greece}} | S | S | S | S | S | S | S | S | S | S | S | – | S | S |
| Guatemala}} | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | S | 1911 | – |
| Guyana}} | 1997 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Haiti}} | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | 1910 |
| Honduras}} | 1961 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Hungary}} | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | 1918 | – | 1918 | – |
| Iceland}} | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | 1955 | – | 1955 | – |
| India}} | – | 1950 | 1950 | 1950 | – | – | 1950 | 1950 | 1950 | – | 1950 | – | – | 1950 |
| Iran}}{{refn|group=note|name=Iran}} | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Iraq}} | 1970 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Ireland}} | 2002 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Israel}} | 1962 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Italy}}{{refn|group=note|name=Italy}} | S | S | S | S | S | S | S | S | S | 1937 | S | S | S | – |
| Japan}}{{refn|group=note|name=Japan}} | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | S | 1911 | – |
| Jordan}} | 1991 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Kenya}} | 2006 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| South Korea}} | 1999 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Kosovo}} | group=note|name=NLdepositKOS|The Government of the Netherlands (as the depositary) published a notice of the deposit of an instrument of accession by Kosovo. However, the United States, amongst others, filed a statement arguing that only powers invited to the second peace conference and UN members could accede unilaterally.[23] On 4 January 2016 the Administrative Council of the Permanent Court placed Kosovo's accession "under review", and the depository subsequently removed it from its treaty database. This decision was withdrawn on 13 June following a PCA Administrative Council vote (41 in favour, 24 against, 13 abstentions),[24] and it was re-added to the list by the depository.}} | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Kuwait}} | 2003 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Kyrgyzstan}} | 1992 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Laos}} | 1955 | 1955 | 1955 | 1955 | 1955 | – | 1955 | 1955 | 1955 | 1955 | 1955 | – | 1955 | – |
| Latvia}} | 2001 | – | – | – | – | – | – | – | – | 1923 | – | – | – | – |
| Lebanon}} | 1968 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Liberia}} | – | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | 1914 | – | 1914 | – | 1914 | 1914 |
| Libya}} | 1996 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Liechtenstein}} | 1994 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Lithuania}} | 2004 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Luxembourg}} | 1912 | – | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | – | 1912 | 1912 |
| Republic of Macedonia}} | 2000 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Madagascar}} | 2009 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Malaysia}} | 2002 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Malta}} | 1968 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Mexico}} | 1909 | 1909 (W) | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | S | 1909 | – |
| {{flag>Principality of Montenegro}}{{refn|group=note|name=Montenegro}} | – | – | S | S | S | S | S | – | S | S | – | – | S | – |
| Morocco}} | 2001 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Netherlands}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | S | 1909 | 1909 |
| New Zealand}} | 2010 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Nicaragua}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 |
| Nigeria}} | 1986 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Norway}} | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | 1910 |
| Pakistan}} | – | 1950 | 1950 | 1950 | – | – | 1950 | 1950 | 1950 | – | – | – | – | 1950 |
| State of Palestine}} | group=note|name=NLdeposit|The Government of the Netherlands (as the depositary) published a notice of the deposit of an instrument of accession by Palestine. Amongst others the United States filed objections stating that only powers invited to the second peace conference or UN members could accede unilaterally.[25] In March 2016, the Administrative Council of the Permanent Court of Arbitration took note of the membership of Palestine: 54 members voted in favour, while 25 abstained.[26]}} | – | – | 2014 | – | – | – | – | – | – | – | – | – | – |
| Panama}} | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | S | 1911 | 1911 |
| Paraguay}} | 1933 | S | S | S | S | S | S | S | S | S | S | – | S | – |
| Peru}} | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Philippines}} | 2010 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Poland}}{{refn|group=note|Ratified as the government of the Second Polish Republic.}} | 1922 | – | 1925 | 1925 | 1925 | 1935 | 1935 | – | 1935 | 1935 | 1935 | – | – | – |
| Portugal}}{{refn|group=note|Ratified as the government of the First Portuguese Republic.}} | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | 1911 | – | 1911 | 1911 | 1911 | S | 1911 | 1911 |
| Qatar}} | 2005 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Romania}}{{refn|group=note|name=Romania}} | 1912 | – | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | 1912 | – | 1912 | – |
| Russia}}{{refn|group=note|name=Russia}} | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | 1909 | – | 1909 | 1909 | – | – | 1909 | – |
| Rwanda}} | 2011 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| São Tomé and Príncipe}} | 2014 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Saudi Arabia}} | 2001 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Senegal}} | 1977 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| {{flag>Kingdom of Serbia}}{{refn|group=note|name=Serbia|Ceased to be a state on 1 December 1918.}} | – | – | S | S | S | S | S | S | S | S | S | – | S | – |
| Singapore}} | 1993 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Slovakia}} | 1993 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Slovenia}} | 2004 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| South Africa}} | 1998 | 1978 | 1978 | 1978 | – | – | 1978 | 1978 | 1978 | – | 1978 | – | – | – |
| Spain}}{{refn|group=note|name=Spain}} | 1913 | 1913 | 1913 | – | 1913 | 1913 | 1913 | – | 1913 | 1913 | 1913 | S | – | – |
| Sudan}} | 1966 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Suriname}} | 1992 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Swaziland}} | 1970 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Sweden}} | 1909 | – | 1909 | 1909 | 1909 | 1909 | 1909 | – | 1909 | 1909 | 1909 | S | 1909 | – |
| Switzerland}} | 1910 | – | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | 1910 |
| Thailand}}{{refn|group=note|name=Thailand}} | 1910 | – | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | 1910 | S | 1910 | 1910 |
| Togo}} | 2004 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Turkey}}{{refn|group=note|name=Turkey}} | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Uganda}} | 1966 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Ukraine}}{{refn|group=note|name=Ukraine}} | 1962 | 1991 | 1991 | 1991 | 1991 | 1991 | 1991 | – | 1991 | 1991 | – | – | 1991 | – |
| United Arab Emirates}} | 2008 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| United Kingdom}} | 1970 | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | 1909 (W){{refn>group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} | group=note|name=UK}} |
| United States}} | 1909 | 1909 | 1909 | 1909 | 1909 | – | – | 1909 | 1909 | 1909 | 1909 | S | 1909 | 1909 |
| Uruguay}} | S | S | S | S | S | S | – | S | S | S | S | S | S | S |
| Venezuela}} | S | – | S | S | S | S | S | S | S | S | S | – | S | – |
| Vietnam}} | 2011 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Zambia}} | 1999 | – | – | – | – | – | – | – | – | – | – | – | – | – |
| group=note|name=totals | 101 | 29 | 40 | 43 | 36 | 32 | 38 | 32 | 41 | 37 | 35 | group=note|1 state ratified the treaty, but it never entered into force. | 32 | 22 |
|---|
1. ^Convention (I) for the pacific settlement of international disputes (1899): Parties.
2. ^Convention (II) with respect to the laws and customs of war on land (1899): Parties.
3. ^Convention (III) for the adaptation to maritime warfare of the principles of the Geneva Convention of 22 August 1864 (1899): Parties.
4. ^Declaration (IV,1) concerning the prohibition of the discharge of projectiles and explosives from balloons or by other new analogous methods (1899): Parties.
5. ^Declaration (IV,2) concerning the prohibition of the use of projectiles with the sole object to spread asphyxiating poisonous gases (1899): Parties.
6. ^Declaration (IV,3) concerning the prohibition of the use of bullets which can easily expand or change their form inside the human body such as bullets with a hard covering which does not completely cover the core, or containing indentations (1899): Parties.
7. ^Convention (I) for the pacific settlement of international disputes (1907): Parties.
8. ^Convention (II) respecting the limitation of the employment of force for recovery of contract debts (1907): Parties.
9. ^Convention (III) relative to the opening of hostilities (1907): Parties.
10. ^Convention (IV) respecting the laws and customs of war on land (1907): Parties.
11. ^Convention (V) relative to the rights and duties of neutral powers and persons in case of war on land (1907): Parties.
12. ^Convention (VI) relative to the legal position of enemy merchant ships at the start of hostilities (1907): Parties.
13. ^Convention (VII) relative to the conversion of merchant ships into war-ships (1907): Parties.
14. ^Convention (VIII) relative to the laying of automatic submarine contact mines (1907): Parties.
15. ^Convention (IX) concerning bombardment by naval forces in time of war (1907): Parties.
16. ^Convention (X) for the adaptation to maritime warfare of the principles of the Geneva Convention (of 6 July 1906) (1907): Parties.
17. ^Convention (XI) relative to certain restrictions with regard to the exercise of the right of capture in naval war (1907): Parties.
18. ^Convention (XII) relative to the establishment of an International Prize Court (1907): Parties. Convention (XII) did not come into force.
19. ^Convention (XIII) concerning the rights and duties of neutral Powers in naval war (1907): Parties.
20. ^Declaration (XIV) prohibiting the discharge of projectiles and explosives from balloons (1907): Parties.
21. ^{{cite journal|url=https://zoek.officielebekendmakingen.nl/trb-1981-96|publisher=Government of the Netherlands|work=Tractatenblad|issue=96|year=1981|title=Verdrag voor de Vreemdzame geslechting van internationale geschillen}}
22. ^{{cite journal|url=https://zoek.officielebekendmakingen.nl/trb-1981-99|publisher=Government of the Netherlands|work=Tractatenblad|issue=99|year=1981|title=Verdrag nopens de wetten en gebruiken van de oorlog te land}}
23. ^{{cite web|url=https://verdragenbank.overheid.nl/nl/Verdrag/Details/003316/003316_Notificaties_14.pdf|work=Government of the Netherlands|title=Declaration, United States|date=28 December 2015}}
24. ^{{cite web|accessdate=15 June 2016|date=14 June 2016|url=http://www.rtklive.com/en/?id=2&r=5407|title=Kosovo-New member of the Permanent Court of Arbitration|work=RTKlive}}
25. ^{{cite web|url=https://verdragenbank.overheid.nl/nl/Verdrag/Details/003316/003316_Notificaties_14.pdf|work=Government of the Netherlands|title=Declaration, United States|date=28 December 2015}}
26. ^{{cite web|work=Permanent Court of Arbitration|title=New PCA Member State: Palestine|url=https://pca-cpa.org/en/news/new-pca-member-state-palestine/|accessdate=17 March 2016}}