Giant Atlantic tree-rat

{{Short description|Species of rodent}}

{{Speciesbox | name = Giant Atlantic tree-rat

| image = Curarão.jpeg

| status = EN

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Leite, Y. |author2=Loss, C. |date=2016 |title=Phyllomys thomasi |volume=2016 |page=e.T6989A22210762 |doi=10.2305/IUCN.UK.2016-2.RLTS.T6989A22210762.en |access-date=19 November 2021}}

| genus = Phyllomys

| species = thomasi

| authority = (H. von Ihering, 1897)

}}

The giant Atlantic tree-rat (Phyllomys thomasi) is a spiny rat species from Brazil. It is endemic to São Sebastião Island off the coast of São Paulo State. The island is largely protected by the Ilhabela State Park.{{citation|language=pt|ref={{harvid|Parque Estadual de Ilhabela – Parque}}

|title=Parque Estadual de Ilhabela|publisher=Parque Estadual de Ilhabela |url=http://www.ilhabela.com.br/parque-estadual-de-ilhabela/|access-date=2016-12-23}}