Last name ทองพัฒน์ (ทองพัฒน์ 
, Thongpat ) , in all the world, is a rare surname. The last name ทองพัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname. Very seldom, ทองพัฒน์ is the forename as well as the last name.