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Surname Alsaidi (Alsaidi , الصايدي , Алсаиди ) , throughout the world, is a common cognomen. The cognomen Alsaidi is characteristic of Western Asia, particularly Oman, where it is quite a common surname, Yemen, and United Arab Emirates, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Western Asia, particularly Yemen, Oman, and Saudi Arabia.