Cognomen جا (Ja 
, Jaa 
, جا 
) , in the world, is a widespread family name. The family name جا 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). Not in comparison with a country's population, it most frequently occurs in India, Mongolia, and Myanmar. Also, جا is the forename as well as the last name.