Last name Tiyasan (Tiyasan 
, ติญะสันต์ , ติยะสัญ ) , all around the world, is a very rare family name. The family name Tiyasan is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname. Very seldom, Tiyasan is the forename as well as the last name.