Cognomen Phetsamai (Phetsamai 
) , globally, is a very rare family name. The last name Phetsamai is characteristic of Laos, where it is a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, Phetsamai is the forename as well as the last name.
Jesus, Chanthabane, Voravongsy, Sengsavang, Frichithavong, Thoummavong, Wedemeyer, Indavong, Vilaivong, Phichith, Phaengsy, Vongsay, Pongsak, Chairab, Chairap, Phakoxay, Phengkhamhak, and Khamphachanh