Surname Хуань (Huan 
, Khuan , Khouan 
) , all around the world, is a widespread last name. The last name Хуань is characteristic of Malaysia, where it is a common surname, Singapore, where it is quite a rare surname, and China. In absolute terms, it is the most numerous in Malaysia, China, and Vietnam. Likewise, Хуань is the forename as well as the last name.