Surname สุดใจรัก (สุดใจรัก 
, Sudjairuk , Sudjairax ) , in all the world, is a very rare family name. The cognomen สุดใจรัก is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, สุดใจรัก is the forename as well as the last name.