Cognomen เพ็งพัฒน์ (เพ็งพัฒน์ 
) , throughout the world, is a very rare surname. The cognomen เพ็งพัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, เพ็งพัฒน์ is the forename as well as the last name.