Surname เพ็ญศิริกุล (เพ็ญศิริกุล 
) , all over the world, is a very rare cognomen. The last name เพ็ญศิริกุล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, เพ็ญศิริกุล is the forename as well as the last name.