Nesoryzomys swarthi

{{Short description|Species of rodent}}

{{Speciesbox | status = VU | status_system = IUCN3.1

|status_ref={{cite iucn |author=Dowler, R. |author2=Weksler, M. |date=2018 |title=Nesoryzomys swarthi |volume=2018 |page=e.T14709A22390617 |doi=10.2305/IUCN.UK.2018-1.RLTS.T14709A22390617.en |access-date=15 November 2021}}

| image =

| genus = Nesoryzomys

| species = swarthi

| authority = Orr, 1938

| synonyms =

}}

Nesoryzomys swarthi, also known as the Santiago nesoryzomysMusser and Carleton, 2005 or Santiago Galápagos mouse, is a species of rodent in the genus Nesoryzomys of family Cricetidae. It is found only on Santiago in the Galápagos Islands. Its natural habitat is subtropical or tropical dry shrubland.

It was considered extinct since it was last recorded in 1906, but it was rediscovered in 1997. A smaller, related rice rat was also rediscovered—the Fernandina rice rat (Nesoryzomys fernandinae) on Fernandina.Dowler, R.C., Carroll, D.S. and Edwards, C.W. 2000. Rediscovery of rodents (Genus Nesoryzomys) considered extinct in the Galápagos Islands. Oryx 34(2):109–118.