Surname อิสรวงศ์ (อิสรวงศ์ 
, Isarawong ) , all over the world, is an extremely rare cognomen. The family name อิสรวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, อิสรวงศ์ is the forename as well as the last name.