Mountain spiny pocket mouse

{{Short description|Species of rodent}}

{{Speciesbox

| name = Mountain spiny pocket mouse

| image =

| status = LC | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Timm, R. |date=2016 |title=Heteromys oresterus |volume=2016 |page=e.T10010A22223385 |doi=10.2305/IUCN.UK.2016-2.RLTS.T10010A22223385.en |access-date=12 November 2021}}

| genus = Heteromys

| species = oresterus

| authority = W. P. Harris, 1932

| synonyms =

}}

The mountain spiny pocket mouse (Heteromys oresterus) is a species of rodent in the family Heteromyidae. It is endemic to Costa Rica. Its natural habitat is subtropical or tropical moist lowland forests.