Last name Vanyai (Vanyai 
, วันใหญ่) , in all the world, is a rare family name. The last name Vanyai is characteristic of Hungary, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Hungary, Australia, and the United States. Very seldom, Vanyai is the forename as well as the last name.