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| 1843, Feb. 11 |
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| Treaty of friendship between the sultan of Lahij and Britain, in which the sultan finally acquiesced to British control of Aden. | 1 |
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| 1843–65 |
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| Faysal ruled as Saudi emir (second reign). He escaped from captivity in Egypt and recaptured the Saudi throne, resuming his expansionist policies. He sought to impose his authority on Bahrain, Qatar, the Trucial Coast, and northern Oman, but was frustrated by the British. | 2 |
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| 1844, Nov. 17 |
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| Treaty of commerce between Muscat and France, granting France extraterritorial rights and most-favored-nation treatment. | 3 |
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| 1853, May 4 |
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| In the conclusion of a perpetual maritime truce among tribal sheiks of the Persian Gulf, they prolonged in perpetuity previous agreements to cease all maritime warfare and piracy. | 4 |
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| 1854, July 14 |
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| The ruler of Muscat ceded the Kuria Muria Islands to the British Crown. | 5 |
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| 1856 |
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| Thuwayni ibn Sa’id succeeded his father as ruler of Oman and Muscat. | 6 |
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| Nov. 17 |
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| Muscat leased from Iran the port of Bandar Abbas and the islands of Qishm and Hormuz for an annual payment of 14,000 tomans. | 7 |
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