Last name เพชรชลาลัย (Petchalalai 
, เพชรชลาลัย ) , in the entire world, is a very rare surname. The family name เพชรชลาลัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, เพชรชลาลัย is the forename as well as the last name.