List of mammals of Antarctica

The following is a list of native wild mammal species recorded in Antarctica. There are 23 mammal species in Antarctica, all of which are marine. Three are considered endangered, one is vulnerable, eight are listed as data deficient, and one has not yet been evaluated. Domesticated species, such as the dogs formerly present, are not included.

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	Extinct	No reasonable doubt that the last individual has died.
EW	Extinct in the wild	Known only to survive in captivity or as a naturalized population well outside its historic range.
CR	Critically endangered	The species is in imminent danger of extinction in the wild.
EN	Endangered	The species is facing a very high risk of extinction in the wild.
VU	Vulnerable	The species is facing a high risk of extinction in the wild.
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	Least concern	The species is not currently at risk of extinction in the wild.
DD	Data deficient	There is inadequate information to assess the risk of extinction for this species.
NE	Not evaluated	The conservation status of the species has not been studied.