Last name Trsn (Trsn 
) , throughout the world, is a very rare cognomen. The family name Trsn is habitual in Vietnam, where it is a very rare surname, France, and Turkey, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Vietnam, France, and India. Much less frequently, Trsn is the forename as well as the last name.