Margarya bicostata

{{Short description|Species of gastropod}}

{{Italic title}}

{{Taxobox

| name = Margarya bicostata

| image = Margarya bicostata shell.png

| image_caption = Apertural view of the shell of Margarya bicostata. Scale bar is 1 cm.

| image2 = Margarya bicostata shell 2.png

| image2_caption = Abapertural view of the shell of Margarya bicostata. Scale bar is 1 cm.

| status = EN

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Aldridge, D. |author2=Di, L. |author3=Jiang, Y. |author4=McIvor, A. |date=2009 |title=Margarya bicostata |volume=2009 |page=e.T168212A6466503 |doi=10.2305/IUCN.UK.2009-2.RLTS.T168212A6466503.en |access-date=18 November 2021}}

| regnum = Animalia

| phylum = Mollusca

| classis = Gastropoda

| unranked_superfamilia = clade Caenogastropoda

informal group Architaenioglossa

| superfamilia = Viviparoidea

| familia = Viviparidae

| subfamilia =

| genus = Margarya

| species = M. bicostata

| binomial = Margarya bicostata

| binomial_authority = Tchang & Tsi, 1949

| synonyms_ref =

| synonyms =

}}

Margarya bicostata is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.