Cognomen Джекс (Jacks 
, Jackes 
, Джекс 
) , in all the world, is a common surname. The surname Джекс is habitual in Jamaica, where it is quite a rare surname, Paraguay, and New Zealand. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia. Much less frequently, Джекс is the forename as well as the last name.