'''Semak''' (Ukrainian, Russian: Сема́к) is a Ukrainian surname that may refer to:
* Alexander Semak (born 1966), Soviet and Russian ice hockey player * Andrei Semak (born 1974), Russian footballer * Sergei Semak (born 1976), Russian footballer
== Other == * The Sefer Mitzvot Katan, by Isaac ben Joseph of Corbeil
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Category:Russian-language surnames