Family name Jovian (Jovian 
, Jovianus , Iovis 
) , in all the world, is quite a rare surname. The cognomen Jovian is characteristic of Hungary, where it is quite a rare surname, Greece, where it is a rare surname, and Taiwan. Measured by absolute frequency, it most frequently occurs in Indonesia, Hungary, and Taiwan. More prevalently, Jovian is the forename as well as the last name.