Cognomen Dachao (大超 
, 达超 , Dachao 
) , in the entire world, is quite a rare last name. The cognomen Dachao is habitual in China, where it is a rare surname, Thailand, where it is a very rare surname, and France, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in China, Thailand, and the United States. More prevalently, Dachao is the forename as well as the last name.