Family name Déjà (Ja 
, Deja 
, Desia 
) , globally, is a widespread surname. The last name Déjà is characteristic of Mongolia, where it is a widespread surname, Myanmar, where it is quite a common surname, and Syria (explore the name in all countries). In absolute terms, this name is the most popular in India, Mongolia, and Myanmar. Likewise, Déjà is the forename as well as the last name.