Cognomen ハノン (Hannon 
, ハノン 
) , in all the world, is a common last name. The cognomen ハノン is habitual in Ireland, where it is quite a common surname, Jersey, and Belgium, where it is quite a rare surname. In absolute terms, it is the most numerous in the United States, Ireland, and the United Kingdom. Very seldom, ハノン is the forename as well as the last name.