Family name Thasa (Thasa 
, ฐษา , ธษา ) , in the entire world, is a rare last name. The cognomen Thasa is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, Myanmar, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it most frequently occurs in India, Indonesia, and Thailand. Likewise, Thasa is the forename as well as the last name.