Surname ตั้งตรงหฤทัย (ตั้งตรงหฤทัย, Tungtrongharuetai, Tangtrongharuethai 
) , around the globe, is an extremely rare last name. The cognomen ตั้งตรงหฤทัย is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.