Cognomen Phengphet (Phengphet 
) , globally, is a rare last name. The surname Phengphet is habitual in Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and Canada, where it is an extremely rare surname. Much less frequently, Phengphet is the forename as well as the last name.
Alina, Kalong, Phinyo, Ramita, Onausa, Suthira, Kaysone, Umaphon, Kamonsiri, Kittisak, Paphanit, Pornthip, Preeyanuch, Preeyaporn, and Watcharaphong