This is a list of the native mammal species recorded in Argentina. As of January 2020, the list contains 402 mammal species from Argentina, of which one is extinct, seven are critically endangered, seventeen are endangered, sixteen are vulnerable, and thirty are near threatened.[n 1]
The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature; those on the left are used here, those in the second column in some other articles:
| EX | EX | Extinct | No reasonable doubt that the last individual has died. |
| EW | EW | Extinct in the wild | Known only to survive in captivity or as a naturalized population well outside its historic range. |
| CR | CR | Critically endangered | The species is in imminent danger of extinction in the wild. |
| EN | EN | Endangered | The species is facing a very high risk of extinction in the wild. |
| VU | VU | Vulnerable | The species is facing a high risk of extinction in the wild. |
| NT | NT | Near threatened | The species does not qualify as being at high risk of extinction but is likely to do so in the future. |
| LC | LC | Least concern | The species is not currently at risk of extinction in the wild. |
| DD | DD | Data deficient | There is inadequate information to assess the risk of extinction for this species. |
| NE | NE | Not evaluated | The conservation status of the species has not been studied. |
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