Cognomen พระสุวรรณ (Phrasuwan 
, พระสุวรรณ , Phraesuwan ) , in the world, is a very rare family name. The last name พระสุวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, พระสุวรรณ is the forename as well as the last name.