Nesoryzomys swarthi, also known as the Santiago nesoryzomys[2] or Santiago Galápagos mouse,[1] 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.

[1] It was considered extinct since it was last recorded in 1906, but it was rediscovered in 1997.

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