Komarnica is a geographic name that may refer to:
*, a river in northern Montenegro
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Komarnica, Cerkvenjak, a village in the Municipality of Cerkvenjak, northeastern Slovenia
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Komarnica, Šavnik, a village in the Municipality of Šavnik, central Montenegro
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Komarnica, Staro Petrovo Selo, a village in the Municipality of Staro Petrovo Selo, eastern Croatia
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