Cognomen เพียงแก้ว (Peangkaew 
, เพียงแก้ว, Piangkaew ) , globally, is a very rare surname. The family name เพียงแก้ว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, เพียงแก้ว is the forename as well as the last name.