Last name Цуань (Zuang 
, Цуань 
) , all over the world, is a rare cognomen. The cognomen Цуань is characteristic of Luxembourg, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Myanmar. Measured by absolute frequency, it is the most numerous in Indonesia, Luxembourg, and Myanmar. Very seldom, Цуань is the forename as well as the last name.