Eaton's pintail (Anas eatoni ) is a dabbling duck of the genus Anas. It is also known as the southern pintail. The species is restricted to the island groups of Kerguelen and Crozet in the southern Indian Ocean. It resembles a small female northern pintail. It was named after the English explorer and naturalist Alfred Edmund Eaton. It is threatened by introduced species, particularly feral cats, which prey on it.
There are two subspecies: A. eatoni eatoni (Kerguelen pintail) and A. eatoni drygalskii (Crozet pintail).
