Family name Thongxay (Thongxay 
) , in the world, is an extremely rare cognomen. Much more frequently, Thongxay is the forename as well as the last name.
Virath, Almonte, Hansana, Xayadeth, Phithamma, Herchueyang, Xayyasone, Southisene, Sompasong, Rattanaxay, Chanthavone, Keomanivong, Sirisomphong, Banchongchith, Phoutthavongkeo, and Chanthavongsa