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Cognomen Cayne (Cayne , 凱恩 , Кейн ) , all over the world, is a rare family name. The family name Cayne is characteristic of Israel, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine. Not in comparison with a country's population, it is the most numerous in the United States, Israel, and Russia. Likewise, Cayne is the forename as well as the last name.