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Family name วิโรจนะ (Virojana , วิโรจนะ , Wirodjana ) , throughout the world, is a rare cognomen. The cognomen วิโรจนะ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Also, วิโรจนะ is the forename as well as the last name.