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