Surname เพ็ญไพจิตร (เพ็ญไพจิตร 
, Phenpaijit , Phenphaijit ) , around the world, is a very rare family name. The last name เพ็ญไพจิตร is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, เพ็ญไพจิตร is the forename as well as the last name.