Last name แรง (Tust 
, แรง 
, Raeng 
) , around the world, is a rare cognomen. The last name แรง is habitual in Estonia, where it is quite a rare surname, Argentina, where it is a rare surname, and Germany. Not in comparison with a country's population, it most frequently occurs in the United States, Germany, and Argentina. Very seldom, แรง is the forename as well as the last name.