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Last name หนองยาว (Nongyao , Nongyaw , Nong Yao ) , across the world, is a rare cognomen. The family name หนองยาว is characteristic of Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and China, where it is an extremely rare surname. Much more frequently, หนองยาว is the forename as well as the last name.