Trigonostoma pygmaeum

{{Short description|Species of gastropod}}

{{Use dmy dates|date=January 2023}}

{{Speciesbox

| image =

| image_caption =

| genus = Trigonostoma

| species = pygmaeum

| authority = (C.B. Adams, 1852)

| synonyms_ref =

| synonyms = Cancellaria pygmaeum C. B. Adams, 1852a

}}

Trigonostoma pygmaeum is a species of sea snail, a marine gastropod mollusc in the family Cancellariidae, the nutmeg snails.{{WRMS species|464859|Trigonostoma pygmaeum (C.B. Adams, 1852)||13 July 2019}}