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Last name Udu (Wood , Udu ) , all over the world, is a widespread surname. The cognomen Udu is habitual in Isle of Man, where it is a common surname, Jersey, and New Zealand (explore the name in all countries). Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Much less frequently, Udu is the forename as well as the last name.