Family name Wanvilai (Wanvilai 
) , throughout the world, is a very rare cognomen. The cognomen Wanvilai is characteristic of Thailand, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and the United States. More frequently, Wanvilai is the forename as well as the last name.
Autsa, Aksornsingchai, Ngamsurach, Luengthaviboon, Laothanacharoen, Lapprattana, Raksaphan, Phintakhu, Ketsitthibul, Chulaphan, Maneechay, Nasinpoem, Khunpaijit, Samuttai, Mangtong, Wiangdonko, Janlamanee, Lelavith, Kamkhrua, Kanpetch, Boonsom, Srisopa, Ninsom, Nilsom, Pochai, Bunsob, Sonhom, Singse, Saiyen, Posri, Thammawongsa, and Vichaitanaphat