Family name วทัญญูไพศาล (Vatanyoopaisan 
, วทัญญูไพศาล ) , all around the world, is a very rare surname. The family name วทัญญูไพศาล is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, วทัญญูไพศาล is the forename as well as the last name.