Cognomen พระคุณ (Gracias 
, พระคุณ 
, Gracekk) , in all the world, is a common surname. The surname พระคุณ is characteristic of Latin America and the Caribbean, particularly El Salvador, where it is quite a common surname, the Dominican Republic, and Guatemala. In absolute terms, this name is the most popular in India, Guatemala, and the Dominican Republic. Also, พระคุณ is the forename as well as the last name.