Surname コウン (Khoun 
, コウン) , across the world, is quite a rare last name. The family name コウン is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname, Malaysia, where it is a rare surname, and Cambodia. Measured by absolute frequency, this name is the most popular in India, Laos, and the United States. Likewise, コウン is the forename as well as the last name.