Cognomen สุวรรณตรา (สุวรรณตรา 
, Suwantras) , around the globe, is a very rare last name. The family name สุวรรณตรา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, สุวรรณตรา is the forename as well as the last name.