>
Last name Thạch (Thach , Thạch , Тхать ) , across the world, is a common cognomen. The last name Thạch is habitual in Vietnam, where it is quite a rare surname, Australia, and the United States. Not in comparison with a country's population, the name is most common in Vietnam, the United States, and Canada. Also, Thạch is the forename as well as the last name.