Cognomen Ijuk (Jok 
, Ijuk 
, Ejoo 
) , around the world, is quite a common last name. The cognomen Ijuk is characteristic of Guam, where it is quite a common surname, Morocco, where it is quite a rare surname, and South Sudan. Not in comparison with a country's population, it is commonest in Morocco, Indonesia, and Malaysia. Likewise, Ijuk is the forename as well as the last name.