Last name Зэта (Zeta 
, Зэта 
) , throughout the world, is a common cognomen. The surname Зэта is habitual in Peru, where it is quite a common surname, Guatemala, where it is quite a rare surname, and Philippines. Measured by absolute frequency, this name is the most popular in Peru, Philippines, and Indonesia. Very seldom, Зэта is the forename as well as the last name.