The Chatham Islands Penguin (Eudyptes sp.) was a species of penguin, now extinct. It is known only from subfossil bones, but may have become extinct as recently as the late 19th century as a bird kept captive at some time between 1867 and 1872 might refer to this taxon. It appears to have been a distinct species, with a thin, slim and low bill. As of 2009, the species has not been formally described.
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