Cognomen Houan (厚安 
, Houan 
) , in all the world, is a rare last name. The surname Houan is habitual in China, where it is a very rare surname, France, where it is an extremely rare surname, and Argentina. In absolute terms, it most frequently occurs in China, France, and the United States. More prevalently, Houan is the forename as well as the last name.