Family name Vasana (วาสนา 
, Vasana 
) , across the world, is a common surname. The cognomen Vasana is habitual in Mongolia, where it is a widespread surname, Sri Lanka, where it is quite a rare surname, and Thailand, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Mongolia, India, and Thailand. More prevalently, Vasana is the forename as well as the last name.