Mouse-tailed Atlantic spiny rat

{{Short description|Species of rodent}}

{{Speciesbox | name = Mouse-tailed Atlantic spiny-rat

| image = Loncheres myosurus - 1700-1880 - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBA01 IZ20600135.tif

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn|author=Brito, D.|author2=Leite, Y.|author3=Patterson, B.|name-list-style=amp|year=2008|url=https://www.iucnredlist.org/details/18292/0|title=Trinomys myosuros|access-date=6 January 2009}}

| genus = Trinomys

| species = myosuros

| authority = (Lichtenstein, 1830)

| range_map = Trinomys myosuros distribution (colored).png

| synonyms =

Proechimys myosuros

}}

The mouse-tailed Atlantic spiny-rat (Trinomys myosuros) is a spiny rat species from South America. It is found in Brazil.