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Cognomen Gidai (Gidai ) , in the world, is a rare surname. The family name Gidai is characteristic of Hungary, where it is quite a rare surname, Tanzania, where it is a rare surname, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Hungary, Tanzania, and India. Very seldom, Gidai is the forename as well as the last name.