Cognomen สนธิญาณ (Sontayamarn 
, สนธิญาณ , Sontiyan ) , in the entire world, is a very rare last name. The surname สนธิญาณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, สนธิญาณ is the forename as well as the last name.