| 18 April 1855 |
6 April 1856 |
Treaty of Friendship and Commerce, between Great Britain and Siam |
| 22 August 1864 |
22 June 1865 |
Convention for the Amelioration of the Condition of the Wounded in Armies in the Field |
| 6 May 1869 |
|
Treaty between Great Britain and Siam, respecting Quedah |
| 6 April 1883 |
|
Agreement between Great Britain and Siam, for regulating the Traffic in Spirituous Liquors |
| 3 September 1883 |
7 May 1884 |
Treaty between Great Britain and Siam, for the Prevention of Crime in the Territiories of Chiengmai, Lakon, and Lampoonchi, and for the Promotion of Commerce between British Burmah and the Territories aforesaid |
| 31 December 1884 |
10 January 1885 |
Notes Exchanged between Great Britain and Siam Extending the Operation in Siam of the Treaty of September 3, 1883 |
| 21 March 1885 |
|
Additional Act to the Convention of June 1, 1878 establishing a Universal Postal Union with Final Protocol |
| 17 September 1885 |
1 July 1886 |
Regulations in execution of the International Telegraph Convention of July 22, 1875 (Great Britain, Austria-Hungary, Belgium, Bosnia-Herzegovina, Brazil, Bulgaria, Cochin China, Denmark, Egypt, France, Germany, Greece, India, Italy, Japan, Luxemburg, Montenegro, Netherlands and Netherlands Indies, New South Wales, Norway, Portugal, Roumania, Russia, Senegal, Servia, Siam, South Australia, Spain, Sweden, Switzerland, Tasmania, Tunis and Turkey) |
| 30 November 1885 |
30 May 1885 |
Supplementary Article to the Treaty between Great Britain and Siam of September 3, 1883 relative to Extradition |
| 4 July 1891 |
1 July 1892 |
Universal Postal Convention concluded between Argentine Republic, Austria-Hungary, Belgium, Bolivia, Brazil, Bulgaria, Chile, Republic of Colombia, Congo Free State, Republic of Costa Rica, Denmark and Danish Colonies, Dominican Republic, Egypt, Equator, France and French Colonies, Germany and the German Protectorates, Great Britain and various British Colonies, British Colonies of Australasia, Canada, British India, Greece, Guatemala, Kingdom of Hawaii, Republic of Hayti, Republic of Honduras, CONTINUED... |
| 4 July 1891 |
1 July 1892 |
Final Protocol to the Universal Postal Convention, signed at Vienna, July 4, 1891. |
| 29 September 1896 |
28 October 1896 |
Notes Exchanged between Great Britain and Siam Extending the Operation in Siam of the Treaty of September 3, 1883 |
| 6 April 1897 |
|
Convention between Great Britain and Siam undertaking on the part of Siam not to alienate certain Siamese Territories or grant Special Facilities without the consent of Great Britain |
| 15 June 1897 |
|
Universal Postal Convention |
| 29 July 1899 |
|
International Convention with respect to the Laws and Customs of War by Land |
| 29 July 1899 |
|
International Convention for Adapting to Maritime Warfare the Principles of the Geneva Convention of August 22, 1864 |
| 29 July 1899 |
|
International Convention for the Pacific Settlement of International Disputes |
| 29 November 1899 |
|
Boundary Agreement |
| 29 November 1899 |
|
Agreement between the Government of Her Britannic Majesty, on behalf of the Sultans of Perak and Pahang, and the Government of His Siamese Majesty for the definition of Boundaries |
| 29 November 1899 |
|
Agreement between the United Kingdom and Siam relative to the Registration of British Subjects in Siam |
| 20 September 1900 |
|
Agreement between the United Kingdom and Siam relative to Taxation on Land Held or Owned by British Subjects in Siam |
| 6 October 1902 |
|
Declaration between the United Kingdom and Siam relative to the States of Kelantan and Terengganu (to which is annexed the Draft of an Agreement to be concluded between Siam and the Rajahs of those States). Also an Exchange of Notes relative to the appointment of Advisers and Assistant Advisers of the Rajahs of Kelantan and Terengganu |
| 6 July 1906 |
|
International Convention for the Amelioration of the Condition of the Wounded and Sick in Armies in the Field [with Final Protocol] |
| 6 July 1906 |
|
Final Protocol Of The Conference For The Revision Of The Geneva Convention |
| 3 November 1906 |
1 July 1908 |
International Radiotelegraphic Convention.(With Final Protocol and Service Regulations) |
| 14 June 1907 |
|
Protocol for the Accession of Non-Signatory Powers to the Convention of July 29, 1899, for the Pacific Settlement of International Disputes |
| 30 August 1907 |
|
Accession of the United Kingdom to the Declarations signed at The Hague, Jul 29, 1899, Respecting (1) Expanding Bullets, (2) Asphyxiating Gases |
| 18 October 1907 |
26 January 1910 |
International Convention concerning the Laws and Customs of War on Land |
| 18 October 1907 |
26 January 1910 |
International Convention relative to the Conversion of Merchant-Ships into War-Ships |
| 18 October 1907 |
26 January 1910 |
International Convention relative to certain Restrictions on the Exercise of the Right of Capture in Maritime War |
| 18 October 1907 |
26 January 1910 |
International Convention respecting Bombardments by Naval Forces in Time of War |
| 18 October 1907 |
26 January 1910 |
Convention for the Adaptation of the Principles of the Geneva Convention to Maritime War |
| 18 October 1907 |
26 January 1910 |
Convention respecting the Rights and Duties of Neutral Powers in Maritime War |
| 18 October 1907 |
26 January 1910 |
International Convention relative to the Laying of Automatic Submarine Contact Mines |
| 18 October 1907 |
26 January 1910 |
International Declaration Prohibiting the Discharge of Projectiles and Explosives from Balloons |
| 18 October 1907 |
26 January 1910 |
International Convention relative to the Status of Enemy Merchant Ships at the Outbreak of Hostilities |
| 18 October 1907 |
|
Final Act of the Second International Peace Conference held at The Hague in 1907 |
| 18 October 1907 |
|
Convention for the Pacific Settlement of International Disputes |
| 18 October 1907 |
|
Convention for the Establishment of an International Prize Court [with Additional Protocol] |
| 18 October 1907 |
|
International Convention relative to the Opening of Hostilities |
| 13 November 1908 |
|
International Convention relative to the Protection of Literary and Artistic Works, revising that signed at Berne, September 9, 1886, |
| 10 March 1909 |
9 July 1909 |
Treaty between the United Kingdom and Siam (With Annexes of 10 March 1909) |
| 4 May 1910 |
8 August 1912 |
International Convention for the Suppression of the White Slave Traffic |
| 4 May 1910 |
|
International Agreement for the Suppression of Obscene Publications |
| 4 March 1911 |
24 November 1911 |
Treaty between the United Kingdom and Siam respecting the Extradition of Fugitive Criminals |
| 17 January 1912 |
|
International Sanitary Convention (1912) |
| 23 January 1912 |
|
The International Opium Convention and Subsequent Relative Papers |
| 5 July 1912 |
|
International Radiotelegraph Convention |
| 20 November 1912 |
20 November 1912 |
Agreement between the United Kingdom and Siam respecting the Rendition of Fugitive Criminals between Certain States in the Malay Peninsula and Siam |
| 18 September 1913 |
18 September 1913 |
Agreement between the United Kingdom and Siam respecting the Rendition of Fugitive Criminals between the State of North Borneo and Siam |
| 31 December 1913 |
|
Convention respecting the Compilation of International Commercial Statistics |
| 20 March 1914 |
|
Additional Protocol to the International Copyright Convention of November 13, 1908 |
| 9 November 1914 |
21 December 1914 |
Convention between the United Kingdom and France relating to Prizes Captured during the Present European War |
| 28 October 1916 |
|
Accession of States of Johore, Kedah, Perlis, Kelantan and Trengganu to Extradition Treaty between the United Kingdom and Siam of March 4, 1911 |
| 28 June 1919 |
10 January 1920 |
Treaty of Peace between the Allied and Associated Powers and Germany |
| 10 September 1919 |
|
Agreement between the Allied and Associated Powers with regard to the Italian reparation Payments |
| 10 September 1919 |
|
Treaty of Peace between the Allied and Associated Powers and Austria together with the Protocol and Declarations Annexed thereto |
| 10 September 1919 |
|
Convention for the control of the Trade in Arms and Ammunition |
| 10 September 1919 |
|
Agreement between the Allied and Associated Powers with regard to the Contributions to the Cost of Liberation of the Territories of the former Austro-Hungarian Monarchy |
| 13 October 1919 |
|
Convention for the Regulation of Aerial Navigation |
| 27 November 1919 |
|
Treaty of Peace between the Allied and Associated Powers and Bulgaria, and Protocol. |
| 1 May 1920 |
|
Addditional Protocol to the Convention for the Regulation of Aerial Navigation of October 13, 1919 |
| 4 June 1920 |
26 July 1921 |
Treaty of Peace between the Allied and Associated Powers and Hungary and Protocol and Declaration |
| 21 June 1920 |
|
International Convention for the Creation at Paris of an International Institute of Refrigeration |
| 30 November 1920 |
|
Universal Postal Convention (Revision of Convention of May 26, 1906) |
| 16 December 1920 |
|
Protocol Establishing the Permanent Court of International Justice |
| 20 April 1921 |
31 October 1922 |
Convention and Statute on Freedom of Transit |
| 20 April 1921 |
31 October 1922 |
Convention and Statute on the Regime of Navigable Waterways of International Concern |
| 20 April 1921 |
31 October 1922 |
Additional Protocol to the Convention and Statute on the Regime of Navigable Waterways of International Concern |
| 20 April 1921 |
|
Declaration recognising the Right to a Flag of States having no Sea-Coast |
| 10 June 1921 |
|
Agreement for the Extension of Period for Presentation of Claims |
| 30 September 1921 |
|
International Convention for the Suppression of the Traffic in Women and Children |
| 6 October 1921 |
|
International Convention of October 6, 1921, modifying the International Convention of May 20, 1875, for assuring The International Uniformity and Perfection of the Metric System, Together with the International Convention of 1875 |
| 20 December 1921 |
|
Convention between the United kingdom and Siam respecting the Settlement of Enemy Debts referred to in Section III of Part X of the Treaty of Versailles of June 28, 1919 |
| 27 October 1922 |
14 December 1926 |
Protocol Amending Article 5 of the Convention for the Regulation of Aerial Navigation of October 13, 1919. |
| 6 November 1922 |
|
Agreement with Siam and the Malay States respecting Customs |
| 14 June 1923 |
4 June 1934 |
Protocol of an Amendment to Article 393 of the Treaty of Versailles and the corresponding Articles of the other Treaties of Peace |
| 30 June 1923 |
14 December 1926 |
Protocol Amending Article 34 of the Convention for the Regulation of Aerial Navigation of October 13, 1919. |
| 12 September 1923 |
7 August 1924 |
International Convention for the Suppression of the Circulation of and Traffic in Obscene Publications |
| 24 September 1923 |
28 July 1924 |
Protocol on Arbitration Clauses |
| 3 November 1923 |
27 November 1924 |
International Convention relating to the Simplification of Customs Formalities and Protocol of Signature |
| 3 November 1923 |
|
Final Act of the International Conference on Customs and Similar Formalities |
| 9 December 1923 |
23 March 1926 |
Convention and Statute on the International Regime of Railways and Protocol of Signature |
| 9 December 1923 |
26 July 1926 |
Convention and Statute on the International Regime of Maritime Ports and Protocol of Signature |
| 9 December 1923 |
|
Convention relative to the Development of Hydraulic Power affecting more than one State and Protocol of Signature. |
| 25 January 1924 |
|
International Agreement for the Creation at Paris of an International Office for dealing with Contagious Diseases of Animals [ EPIZOOTICS ] |
| 28 August 1924 |
1 October 1925 |
Convention and Protocol revising Universal Postal Convention of November 30, 1920 |
| 6 September 1924 |
|
Denunciation as from 6 December,1924 of Devawongse-Satow agreement of 28/1-2/2/1987 relating to trade across the Siam-Burma frontier |
| 11 February 1925 |
28 July 1926 |
Agreement concerning the Manufacture of, the Internal Trade in, and the Use of Prepared Opium with Protocol and Final Act |
| 19 February 1925 |
25 September 1928 |
International Convention relating to Dangerous Drugs with Protocol |
| 17 June 1925 |
8 February 1928 |
Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare |
| 17 June 1925 |
|
Convention respecting the Suppression of Trade in Arms, Ammunitions etc.. |
| 14 July 1925 |
30 March 1926 |
Treaty between the United Kingdom and Siam for the Revision of their Mutual Treaty Arrangements and Protocol concerning Jurisdiction applicable in Siam to British Subjects, &c. |
| 14 July 1925 |
|
Treaty of Commerce and Navigation between the United Kingdom and Siam |
| 14 July 1925 |
|
Notes Exchanged between the United Kingdom and Siam in Connection with the General and Commercial Treaties between the United Kingdom and Siam, signed at London on July 14, 1925 |
| 25 November 1925 |
|
Arbitration Convention between the United Kingdom and Siam |
| 24 April 1926 |
24 October 1930 |
International Convention relative to Motor Traffic |
| 30 September 1926 |
|
Notes exchanged between the United Kingdom and Siam Respecting Drawbacks and the Method of Computing 'Ad Valorem' Rates under the Siamese Customs Law |
| 17 July 1927 |
|
Exchange of Notes between His Majesty's Government in the United Kingdom and the Government of Siam regarding the Navigation of the River Mekong |
| 26 September 1927 |
25 July 1929 |
International Convention on the Execution of Foreign Arbitral Awards |
| 8 November 1927 |
|
International Convention for the abolition of Import and Export Prohibitions and Restrictions with Protocol and annexed Declaration |
| 25 November 1927 |
1 January 1929 |
Convention regarding Radiotelegraphy [with General Regulations and Supplementary Regulation] |
| 5 January 1928 |
27 February 1928 |
Exchange of Notes Extending the Extradition Treaty of 4 March 1911 to British Mandated Territories |
| 11 July 1928 |
|
International Convention for the abolition of Import and Export Prohibitions and Restrictions with Protocol and annexed Declaration Geneva, November 8, 1927 Supplementary Agreement Geneva, July 11 1928 Protocol Paris, December 20, 1929 |
| 27 August 1928 |
24 July 1929 |
International Treaty for the Renunciation of War as an Instrument of National Policy |
| 15 June 1929 |
17 May 1933 |
Protocol relating to Amendments to Articles 3, 5, 7, 15, 37, 41 and 42 and to the Final Clauses of the Convention relating to the Regulation of Air Navigation of October 13, 1919 |
| 28 June 1929 |
|
Postal Union Agreement regarding Insured Letters and Boxes |
| 28 June 1929 |
|
Universal Postal Convention |
| 28 June 1929 |
|
Postal Union Agreement regarding Parcel Post |
| 27 July 1929 |
19 June 1931 |
International Convention relative to the Treatment of Prisoners of War |
| 27 July 1929 |
19 June 1931 |
International Convention for the Amelioration of the Condition of the Wounded and Sick in Armies in the Field |
| 14 September 1929 |
1 February 1936 |
Protocol for the Revision of the Statute of the Permanent Court of International Justice |
| 14 September 1929 |
|
Protocol Accession of the United States of America to the Protocol of signature of the Statute of the Permanent Court of International Justice |
| 11 December 1929 |
17 May 1933 |
Protocol relating to Amendments to Articles 34 and 40 of the Convention relating to the Regulation of Air Navigation of October 13, 1919 |
| 5 July 1930 |
1 January 1933 |
International Convention respecting Load Lines with Final Protocol and Maps |
| 16 March 1931 |
|
Notes concerning Consular Visas on Bills of Health |
| 13 July 1931 |
9 July 1933 |
International Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs with Protocol of Signature |
| 27 August 1931 |
|
Agreement and Exchange of Notes between His Majesty's Government in the United kingdom and the Government of Siam regulating the Boundary between Burma (Kengtung) and Siam |
| 27 November 1931 |
22 April 1937 |
Agreement for the Control of Opium Smoking in the Far East supplementary to the Geneva Agreement of February 11, 1925 |
| 14 March 1932 |
7 April 1932 |
Exchange of Notes Extending the Extradition Treaty of 4 March 1911 to Transjordan. |
| 9 December 1932 |
1 January 1934 |
Convention concerning International Telecommunications |
| 20 March 1934 |
|
Universal Postal Convention |
| 20 March 1934 |
|
Universal Postal Union Agreement concerning Insured Letters and Boxes |
| 20 March 1934 |
|
Universal Postal Union Agreement concerning Parcel Post |
| 7 May 1934 |
|
Agreement between the Governments of France, the United Kingdom, India, the Netherlands and Siam to Regulate Production and Export of Rubber |
| 1 June 1935 |
|
Protocol amendments to Articles 4,6,7,9,12,13,14,16,19,25,26,34,35 and 39 and addition of new article 25A of the International Air Navigation Convention of 13 October 1919 |
| 1 June 1935 |
|
Protocol Amendments to Annex H of the International Air Navigation Agreement of October 13, 1919 |
| 27 June 1935 |
27 June 1935 |
Protocol signed for the Governments of France, United Kingdom, India, the Netherlands and Siam amending the Agreement of May 7, 1934, for the Regulation of the Production and Export of Rubbers |
| 22 May 1936 |
22 May 1936 |
Protocol signed for the Governments of France, United Kingdom, India, the Netherlands and Siam amending the Agreement of May 7, 1934, for the Regulation of the Production and Export of Rubber |
| 26 June 1936 |
|
Proces-Verbal concerning Limitation of Manufacture and Regulation of Distribution of Narcotic Drugs |
| 6 November 1936 |
6 November 1936 |
Proces-Verbal relating to the Rules of Submarine Warfare set forth in Part IV of the Treaty of London of April 22, 1930 |
| 5 February 1937 |
5 February 1937 |
Protocol between the Governments of France, United Kingdom, India, the Netherlands and Siam amending the Agreement of May 7, 1934, for the Regulation of the Production and Export of Rubber |
| 5 March 1937 |
6 September 1937 |
Exchange of Notes concerning the application of the Extradition Treaty of March 4, 1911 to Zanzibar Protectorate and British Solomon Islands Protectorate. |
| 31 March 1937 |
|
Exchange of Notes between His Majesty's Government in the United Kingdom and the Government of India and the Government of Siam regarding the Nationality of Persons Affected by the Re-delimitation of the Boundary between Burma (Tenasserim) and Siam |
| 13 November 1937 |
|
Exchange of Notes between His Majesty's Government in the United Kingdom and the Siamese Government for the Temporary Continuance of Rights Under the Treaties with Siam of 14 July 1937 |
| 23 November 1937 |
23 November 1937 |
Exchange of Notes between His Majesty's Government in the United Kingdom and the Government of Siam regarding the Right of Evocation from Siamese Courts under the Treaty of 14 July 1937 |
| 23 November 1937 |
19 November 1938 |
Treaty of Commerce and Navigation between His Majesty in respect of the United Kingdom and His Majesty the King of Siam [With Protocol and Exchanges of Notes] |
| 3 December 1937 |
3 December 1937 |
Exchange of Notes between His Majesty's Government in the United Kingdom and the Government of India and the Royal Siamese Government for the operation of regular Air Services over Siam and over India and Burma |
| 3 December 1938 |
31 January 1940 |
International Act concerning Intellectual Co-operation |
| 7 December 1944 |
6 June 1945 |
Interim Agreement on International Civil Aviation |
| 7 December 1944 |
|
Final Act of the International Air Navigation Conference [with appendices] |
| 26 June 1945 |
24 October 1945 |
Charter of the United Nations and Statute of the International Court of Justice |
| 5 November 1945 |
26 September 1946 |
Instrument for the Amendment of the Constitution of the International Labour Organisation |
| 16 November 1945 |
4 November 1946 |
Constitution of the United Nations Educational, Scientific and Cultural Organisation [as later amended] |
| 27 December 1945 |
27 December 1945 |
Articles of Agreement of the International Monetary Fund |
| 27 December 1945 |
27 December 1945 |
Articles of Agreement of the International Bank for Reconstruction and Development |
| 1 January 1946 |
1 January 1946 |
Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of India on the one hand and the Siamese Government on the other for the Termination of the State of War [With Exchanges of Notes and Memoranda between January 1, 1946 and May 8, 1947 concerning Property, Rights and Interests of Allied nationals in Siam] |
| 1 January 1946 |
|
Exchange of Notes between Australia and Siam concerning Prelimary Agreement for Termination of State of War |
| 8 February 1946 |
|
Exchange of Notes constituting an Agreement for the continued Application to New Zealand of the Extradition Treaty of March 4, 1911 as renewed in 1928. |
| 30 March 1946 |
28 January 1948 |
Protocol for the Dissolution of the International Institute of Agriculture and the Transfer of its Functions and Assets to the Food and Agriculture Organisation of the United Nations [with Annex] |
| 3 April 1946 |
3 April 1946 |
Peace Agreement between Siam and Australia |
| 11 July 1946 |
|
Exchange of Notes between the United Kingdom and Siam concerning Joint Claims Committee, under Articles II and III of Peace Agreement of 1 January 1946 |
| 22 July 1946 |
22 July 1946 |
World Health Organisation Final Act of International Conference, Constitution of Organisation, Arrangement Establishing Interim Commission, and Protocol relating to the International Office of Public Health |
| 22 July 1946 |
20 October 1947 |
World Health Organisation, Protocol relating to the International Office of Public Health [with Annex] |
| 22 July 1946 |
7 April 1948 |
World Health Organisation, Constitution of Organisation |
| 22 July 1946 |
|
World Health Organisation Final Act of International Conference 19th June to 22nd July, 1946 |
| 9 October 1946 |
20 April 1948 |
Instrument for the Amendment of the Constitution of the International Labour Organisation |
| 7 December 1946 |
7 December 1946 |
Exchange of Notes and Memorandum of Understanding concerning the Export of Tin |
| 21 December 1946 |
|
Exchange of Notes and Agreement. Restoration of property, rights and interests of British Companies owning Teak leases in Siam |
| 30 December 1946 |
|
Agreement modifying Exchange of Notes of 7 December 1946 concerning Export of Tin |
| 6 January 1947 |
|
Exchanges of Notes and Memorandum of Understanding concerning the Establishment of a British Commonwealth (United Kingdom, Australia and India) and Siamese Claims Committee for the settlement of War Claims Against Siam in respect of Loss or Damage to Property Rights and Interests |
| 17 March 1947 |
|
Exchange of Notes between the United Kingdom and Siam regarding Elevation of Legations to Embassies London and Bangkok |
| 31 March 1947 |
|
Agreement extending by 3 months the Memorandum of Understanding of 7 December 1946 concerning the Export of Tin |
| 5 April 1947 |
5 April 1947 |
Agreement, Appendix and Plans for the Sale or Lease of Property and Rights |
| 8 May 1947 |
|
Exchange of Notes concerning Property, Rights and Interests of Allied Nationals in Siam |
| 8 May 1947 |
|
Exchanges of Notes concerning Desequestration of Allied Banking and Commercial Concerns |
| 30 June 1947 |
|
Agreement relating to Tin |
| 5 July 1947 |
1 July 1948 |
Universal Postal Convention [With Final Protocol and Annex, and Provisions for Letters by Air Mail and Final Protocol to Provisions] |
| 5 July 1947 |
1 July 1948 |
Arrangement, with Final Protocol. Regulations and Forms, concerning Postal Parcels, including Dispositions, Final Protocol and Annex concerning Postal Parcels by Air Mail |
| 5 July 1947 |
1 July 1948 |
Agreement concerning Insured Letters and Boxes [With Final Protocol] |
| 2 October 1947 |
1 January 1949 |
International Convention on Telecommunications [With Annexes, Final Protocol of Signature and Additional Protocols] |
| 11 October 1947 |
23 March 1950 |
Convention of the World Meteorological Organization |
| 11 October 1947 |
|
Protocol concerning Spain as regards accession to the Convention of the World Meteorological Organisation |
| 11 October 1947 |
|
Final Act to the International Meteorological Conference, 22nd September - 11th October 1947 |
| 12 August 1949 |
|
Diplomatic Conference for the Revision of (1) The 10th Hague Convention of 18th October, 1907 (Maritime Warfare) (2) The Geneva Convention of 27th July 1929 (Red Cross Convention) (3) The Geneva Convention of 27 July 1929 (Prisioners of War Convention) and the establishment of (4) Convention relative to Protection of Civilians in Time of War |
| 21 February 1950 |
|
Agreement (and Annex) between Siam and Ceylon concerning Air Traffic |