Cognomen สิทธิสรณ์ (สิทธิสรณ์ 
) , around the world, is an extremely rare family name. The cognomen สิทธิสรณ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, สิทธิสรณ์ is the forename as well as the last name.