Cognomen 洁丝 (Jaz 
, 洁丝 
) , around the world, is quite a rare surname. The cognomen 洁丝 is habitual in Brunei, where it is quite a rare surname, Qatar, and United Arab Emirates. Not in comparison with a country's population, it is the most numerous in Morocco, Saudi Arabia, and Indonesia. More frequently, 洁丝 is the forename as well as the last name.