Nemaster

{{Short description|Genus of echinoderms}}

{{Speciesbox

| image = Nemaster grandis.jpg

| image_caption = Nemaster grandis

| display_parents = 2

| genus = Nemaster

| parent_authority = Clark, 1909

| species = grandis

| authority = Clark, 1909

}}

Nemaster is a monotypic genus of echinoderms belonging to the family Comatulida. The only species is Nemaster grandis.{{cite web |title=Nemaster AH Clark, 1909 |url=https://www.gbif.org/species/2274672 |website=www.gbif.org |access-date=29 September 2021 |language=en}}

The species is found in Central America and Australia.