Cognomen โสเพ็ง (Sopheng 
, โสเพ็ง ) , around the globe, is a rare last name. The cognomen โสเพ็ง is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Cambodia, where it is a very rare surname. Very seldom, โสเพ็ง is the forename as well as the last name.