Surname Phetthavong (Phetthavong 
) , across the world, is a rare last name. The last name Phetthavong is habitual in Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
Roy, Anna, Brian, Viengswanh, Phonsouk, and Phetsavanh