Prunum tethys

{{Short description|Species of gastropod}}

{{Use dmy dates|date=August 2020}}

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| taxon = Prunum tethys

| authority = Lussi & Smith, 1999{{WRMS source|140786|Lussi & Smith (1999). Malacologia (Mostra Mondiale) 29 : 10–15|24 April 2010}}

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Prunum tethys is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.{{WRMS species|457787|Prunum tethys Lussi & Smith, 1999||24 April 2010}}