Cognomen Ήρα (Era 
, Hera , Эра 
, and others...) , across the world, is a common family name. The cognomen Ήρα is characteristic of Albania, where it is quite a common surname, Brunei, where it is quite a rare surname, and Romania. In absolute terms, the name is most common in India, Indonesia, and Bangladesh. More frequently, Ήρα is the forename as well as the last name.