Family name Khamphat (Khamphat 
) , in the world, is a rare surname. The last name Khamphat is characteristic of Thailand, where it is a rare surname, Argentina, where it is an extremely rare surname, and the United States. More frequently, Khamphat is the forename as well as the last name.
Ung, Souvannaphim, Vongnakhone, Thammavong, Phetchampa, Khongsavath, Sivongsay, Thirakul, Thatsana, Praseuth, Paneboun, Kaewchai, Kanhanou, Bounnady, Muhammad, Manivong, Ouravanh, Lathpakdy, Boonuea, Soudaly, Simmavong, Boulom, Sribao, Syda, Chanthavong, and Khamphouvong