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Family name Isaacs (إسحق , Isaacs , אייזקס ) , worldwide, is a common last name. The last name Isaacs is habitual in Saint Vincent and the Grenadines, where it is a common surname, British Virgin Islands, where it is quite a common surname, and Namibia (explore the name in all countries). In absolute terms, it is the most numerous in South Africa, the United States, and Sudan. Very seldom, Isaacs is the forename as well as the last name.