Navicella, an Italian word meaning "little ship", may refer to:
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''Navicella'' (diatom), a genus of diatoms in the family Cymbellaceae
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''Navicella'' (fungus), a genus of fungi in the family Massariaceae
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''Septaria'' (gastropod), a genus of fresh and brackish water snails where ''Navicella'' is a synonym
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Navicella (mosaic), a large mosaic after Giotto of a "Ship of the Church" which dominated the porch of Old Saint Peter's in Rome, or similar subjects in art
{{Disambiguation, genus