| 31 May 1839 |
22 July 1840 |
Convention of Commerce and Navigation between Great Britain and Muscat |
| 2 October 1845 |
1 January 1847 |
Agreement between Her Majesty the Queen of the United Kingdom of Great Britain and Ireland and His Highness Saeed Saeed bin Sultan, the Sultan of Muscat, for the termination of the export of slaves from the African dominions of his Highness the Sultan of Muscat |
| 5 June 1873 |
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Treaty between Great Britain and Zanzibar for the Suppression of the Slave Trade |
| 30 April 1886 |
17 August 1886 |
Treaty of Friendship, Commerce and Navigation between Great Britain and Zanzibar |
| 13 September 1889 |
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Agreement between Great Britain and Zanzibar, respecting the Right of Search in Zanzibar Waters, Slavery, &c. |
| 14 June 1890 |
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Agreement between the Sultan of Zanzibar and Colonel Euan-Smith, Her Majesty's Agent and Consul- General, placing the Dominions of Zanzibar under the Protection of Great Britain |
| 2 February 1891 |
2 February 1891 |
Declaration between Great Britain and Zanzibar, relative to the Exercise of Judicial Powers in Zanzibar |
| 27 October 1892 |
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Protocols between the British and German Commissioners for the Delimitation of the Anglo-German Boundary on East Equatorial Africa |
| 16 December 1892 |
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Declaration between Great Britain and Zanzibar respecting the Judicial Powers on Zanzibar |
| 4 November 1908 |
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Treaty between the United Kingdom and Zanzibar Abrogating the Treaty of April 30, 1886 |
| 3 April 1911 |
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Declaration Abrogating, so far as Regards Zanzibar, the Treaty of May 31, 1839, between the United Kingdom and Muscat |
| 10 December 1963 |
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Public Officers Agreement between the United Kingdom and Tanzania in respect of Zanzibar |