Cognomen Passagorn (Passagorn 
) , across the world, is an extremely rare surname. The last name Passagorn is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Passagorn is the forename as well as the last name.
Kunme, Tevichapong, Thongamkaew, Chaikhaeong, Yoosabai, Netrungwattana, Rangsakorn, Poonpong, Katjayanan, Sreesuksai, Sawatdee, Noonmun, Thappan, Tanavut, Sowassa, Ungrad, Ungard, Nootap, Chumai, Rueng, Chaiviriyawong, and Thonggamkaew