Potamilus

{{Short description|Genus of bivalves}}

{{Automatic taxobox

| image = Potamilus alatus (Say, 1817).jpg

| image_caption = Potamilus alatus

| taxon = Potamilus

| authority = Rafinesque, 1818

| synonyms = {{hidden begin|title = List}}

• Anodonta (Lastena) Rafinesque, 1820
• Lampsilis (Leptodea) Rafinesque, 1820
• Lampsilis (Proptera) Rafinesque, 1819
• Lasmonos Rafinesque, 1831
• Lastena Rafinesque, 1820
• Leptodea Rafinesque, 1820
• Limnadea Agassiz, 1846
• Lymnadea [lapsus]
• Lymnadia G. B. Sowerby II, 1839
• Metaptera Rafinesque, 1820
• Monelagmus Agassiz, 1846
• Monelasmus Agassiz, 1846
• Naidea Swainson, 1840
• Paraptera Ortmann, 1911
• Pareptera Ortmann, 1911
• Potamilus (Lastena) Rafinesque, 1820
• Proptera Rafinesque, 1819
• Stenelasma Herrmannsen, 1849
• Symphynota I. Lea, 1829
• Symphynota (Symphynota) I. Lea, 1829
• Unio (Leptodea) Rafinesque, 1820
• Unio (Metaptera) Rafinesque, 1820
• Unio (Symphynota) I. Lea, 1829

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Potamilus is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.{{Cite web |title=WoRMS - World Register of Marine Species - Potamilus Rafinesque, 1818 |url=https://www.marinespecies.org/aphia.php?p=taxdetails&id=747094 |access-date=2023-01-06 |website=www.marinespecies.org}}