| genus = Popenaias
| species = popeii
| authority = I. Lea, 1857
| synonyms =
}}Popenaias popeii, common name the Texas hornshell, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
This species is found in Mexico, and in Texas and New Mexico in the United States.
References
{{Taxonbar|from=Q2887026}}{{Unionidae-stub}} 6 : Molluscs of Mexico|Molluscs of the United States|Popenaias|Bivalves described in 1857|Taxonomy articles created by Polbot|ESA endangered species