Bare-eared squirrel monkey

{{Short description|Species of New World monkey}}

{{Speciesbox

| name = Bare-eared squirrel monkey{{MSW3 Groves|pages=139|id=12100296}}

| image = Saimiri ustus.jpg

| status = NT

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Alves, S.L. |author2=Silva Júnior, J.S. |author3=Ravetta, A.L. |author4=Messias, M.R. |author5=Lynch Alfaro, J.W. |date=2021 |title=Saimiri ustus |volume=2021 |page=e.T41538A192584351 |doi=10.2305/IUCN.UK.2021-1.RLTS.T41538A192584351.en |access-date=19 November 2021}}

| genus = Saimiri

| species = ustus

| authority = (I. Geoffroy, 1843)

| range_map = Bare-eared Squirrel Monkey area.png

| range_map_caption = Bare-eared squirrel monkey range

}}

The bare-eared squirrel monkey (Saimiri ustus) is a squirrel monkey endemic to Brazil and possibly eastern Bolivia.