Surname เพ็ญไพสิฐ (เพ็ญไพสิฐ 
) , around the globe, is an extremely rare last name. The last name เพ็ญไพสิฐ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, เพ็ญไพสิฐ is the forename as well as the last name.