Hornostaivka ( uk, Горностаївка) may refer to several inhabited places in Ukraine:
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Hornostaivka, an urban-type settlement in Kherson Oblast
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Hornostaivka, Crimea, a village in Crimea
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Hornostaivka, Henichesk Raion, Kherson Oblast, a village in Henicheck Raion, Kherson Oblast
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Hornostaivka, Chernihiv Oblast, a village in Chernihiv Oblast
{{SIA, populated places in Ukraine