Surname ג'קס (Jacks 
, ג'קס 
) , throughout the world, is quite a common last name. The surname ג'קס is habitual in Jamaica, where it is quite a rare surname, Paraguay, and New Zealand. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Nigeria. Much less frequently, ג'קס is the forename as well as the last name.