Surname Tsaan (Tsaan 
, Цаан 
) , in the entire world, is a rare family name. The family name Tsaan is characteristic of Taiwan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Taiwan, Kazakhstan, and Russia. Much less frequently, Tsaan is the forename as well as the last name.