Cognomen เพ็ชรณรงค์ (เพ็ชรณรงค์ 
) , globally, is a very rare last name. The cognomen เพ็ชรณรงค์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, เพ็ชรณรงค์ is the forename as well as the last name.