Last name 재이 (Jei 
, 재이 , Jaei 
) , throughout the world, is quite a rare family name. The cognomen 재이 is characteristic of Saudi Arabia, where it is quite a rare surname, Malaysia, and Qatar, where it is a rare surname. Measured by absolute frequency, it is commonest in Saudi Arabia, Malaysia, and Indonesia. Also, 재이 is the forename as well as the last name.