Cognomen ทองรัก (ทองรัก 
, Thongrak 
, Thongruk ) , across the world, is quite a rare last name. The last name ทองรัก is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, ทองรัก is the forename as well as the last name.