List of mammals of Pitcairn

This is a list of the mammal species recorded in Pitcairn. There are four mammal species in Pitcairn, all of which are marine mammals of the order Cetacea.

The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature:

Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of near threatened and least concern categories:

Order: Cetacea (whales)
The order Cetacea includes whales, dolphins and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.
 * Suborder: Mysticeti
 * Family: Balaenopteridae
 * Subfamily: Megapterinae
 * Genus: Megaptera
 * Humpback whale, Megaptera novaeangliae VU
 * Suborder: Odontoceti
 * Superfamily: Platanistoidea
 * Family: Ziphidae
 * Subfamily: Hyperoodontinae
 * Genus: Mesoplodon
 * Ginkgo-toothed beaked whale, Mesoplodon ginkgodens DD
 * Family: Delphinidae (marine dolphins)
 * Genus: Stenella
 * Spinner dolphin, Stenella longirostris LR/cd
 * Genus: Lagenodelphis
 * Fraser's dolphin, Lagenodelphis hosei DD