Surname ถิรเศรษฐ์ (ถิรเศรษฐ์ 
) , in the world, is a very rare family name. The cognomen ถิรเศรษฐ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ถิรเศรษฐ์ is the forename as well as the last name.