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Yudin (male) and Yudina (female) () are Russian surnames derived from the name Yuda, a Russified version of the former calendar name Jude (given after Jude the Apostle), no longer in use. In Belarus and Western Ukraine the origin might be the Catholic name Judith. Also adopted by Jews following the Partitions of Poland, in reference to a village name Yudino or meaning "the son/daughter of Jude". The name is unrelated to the word Jew.