Actinonaias

{{Short description|Genus of bivalves}}

{{Automatic taxobox

| image = Actinonaias pectorosa.jpg

| image_caption = A live individual of Actinonaias pectorosa, anterior end towards the left

| taxon = Actinonaias

| authority = Crosse & Fischer, 1894

}}

Actinonaias is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.