Family name Phachuen (Phachuen 
) , globally, is a rare cognomen. The cognomen Phachuen is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Phachuen is the forename as well as the last name.
Kulap, Boontarika, Thosaporn, Rujiraporn, Pornpawee, Juraporn, Daraphon, Kiattiphoom, Paritsara, Ekjitra, Pradiht, Pavitra, Jampee, Jambee, Phanin, Wassana, and Wanattapong