Stenomelania juncea is a species of freshwater snail, an aquatic gastropod mollusk in the family Thiaridae.
The sister species of Stenomelania juncea is Stenomelania boninensis.
The type locality is Taal Lake and small streams, Batangas, Luzon, Philippines.
Stenomelania juncea is the first intermediate host for the trematode Haplorchis taichui.