Mesquite mouse

{{Short description|Species of rodent}}

{{speciesbox

| name = Mesquite mouse

| image = Merriam's Mouse imported from iNaturalist photo 128342814 on 27 August 2024.jpg

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |last1=Linzey |first1=A.V. |last2=Timm |first2=R. |last3=Álvarez-Castañeda |first3=S.T. |last4=Castro-Arellano |first4=I. |last5=Lacher |first5=T. |year=2016 |title=Peromyscus merriami |volume=2016 |errata=2017 |page=e.T16680A115137090 |doi=10.2305/IUCN.UK.2016-3.RLTS.T16680A22363406.en |access-date=27 August 2024}}

| status2= G5

| status2_system = TNC

| status2_ref = {{cite NatureServe |title=Peromyscus merriami |id=2.101887 |access-date=27 August 2024 |archive-date=27 February 2024 |archive-url=https://web.archive.org/web/20240227210937/https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.101887/Peromyscus_merriami |url-status=live }}

| genus = Peromyscus

| species = merriami

| authority = Mearns, 1896

| synonyms =

}}

The mesquite mouse (Peromyscus merriami), also known as Merriam's deermouse, is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". it is native to Mexico, as well as Arizona in the United States.