Family name Philailak (พิไลลักษณ์ 
, Philailak ) , throughout the world, is an extremely rare cognomen. Much more frequently, Philailak is the forename as well as the last name.
Lim, Phithakthan, Prasertsang, Tiangtrong, Tangkhaphiphat, Phengkracham, Pengkracham, Srikhanay, Janamnuaisuk, Phechphai, Bunsaeng, Boonsung, Songkong, Tantabut, Kolawal, Sisunon, Boonma, Sesunon, Thaidamrongdech, and Rangsimantuchat