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Family name Ip (Ip , يي , อีฟ ) , across the world, is a common last name. The cognomen Ip is characteristic of Macao, where it is a widespread surname, Hong Kong, where it is a common surname, and Cayman Islands (explore the name in all countries). In absolute terms, it most frequently occurs in Hong Kong, China, and Indonesia. Also, Ip is the forename as well as the last name.