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Surname Rajha (راجحة , Rajha , Райха ) , in the entire world, is quite a rare last name. The cognomen Rajha is habitual in Western Asia, particularly Lebanon, where it is quite a common surname, Syria, where it is quite a rare surname, and Jordan. Measured by absolute frequency, it is the most numerous in Syria, Lebanon, and India. Much more frequently, Rajha is the forename as well as the last name.