Tropidaster

{{Short description|Extinct genus of starfishes}}

{{Automatic taxobox

| fossil_range = Early Jurassic

| image =

| image_caption =

| parent_authority = Wright, 1880

| taxon = Tropidaster

| authority = Forbes, 1850

| subdivision_ranks = Species

| subdivision =

}}

Tropidaster is an extinct genus of sea stars that lived in the Early Jurassic. It is the only genus in the family Tropidasteridae.{{cite WoRMS |author=Mah, C.L. |year=2023 |title=Tropidasteridae Wright, 1880 |id=1519386 |access-date=2 December 2023 |db=Asteroidea}} Its fossils have been found in Europe.