Cognomen 훈 (训 
, Hoon 
, 훈 ) , around the world, is a common family name. The surname 훈 is habitual in South-eastern Asia, particularly Malaysia, where it is a common surname, Singapore, where it is quite a common surname, and Brunei, where it is quite a rare surname. In absolute terms, it is the most numerous in Malaysia, China, and Singapore. Much less frequently, 훈 is the forename as well as the last name.