Cognomen سيون (Seun 
, Seon , سيون 
) , all around the world, is a common surname. The cognomen سيون is characteristic of Nigeria, where it is quite a common surname, Iceland, where it is quite a rare surname, and Namibia. Measured by absolute frequency, this name is the most popular in Nigeria, Malaysia, and France. Likewise, سيون is the forename as well as the last name.