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Surname Ronai (Ronai
, Rónai
, רונאי
) , all over the world, is quite a rare last name. The family name Ronai is habitual in Hungary, where it is quite a common surname, Slovakia, where it is a rare surname, and Hong Kong. Measured by absolute frequency, it is the most numerous in Hungary, the United States, and Romania. Also, Ronai is the forename as well as the last name.