Cognomen Chhan (Chhan 
, ชาน , Чхан 
) , in the entire world, is quite a rare last name. The family name Chhan is habitual in Cambodia, where it is a rare surname, Malaysia, and Ukraine. Measured by absolute frequency, it is the most numerous in the United States, Thailand, and Ukraine. Also, Chhan is the forename as well as the last name.