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Last name Ngiam (Ngiam , เหงี่ยม, เงี่ยม) , around the globe, is quite a rare cognomen. The cognomen Ngiam is characteristic of Singapore, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Taiwan, where it is a rare surname. In absolute terms, it most frequently occurs in South-eastern Asia, particularly Singapore, Malaysia, and Indonesia. Also, Ngiam is the forename as well as the last name.