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Last name שום (Shum , Shumu , שמא ) , in the world, is a common family name. The surname שום is habitual in Hong Kong, where it is a common surname, Bermuda, and Cayman Islands, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Hong Kong, China, and the United States. Also, שום is the forename as well as the last name.