The Calamian treeshrew (Tupaia moellendorffi) is a treeshrew species found in the islands of Busuanga and Culion, which are part of the Calamian Islands group in the Philippines.

[1] The German zoologist Paul Matschie first described a Calamian treeshrew from Culion that was part of a zoological collection obtained by the Berlin Zoological Museum in the present day the Natural History Museum, Berlin.

He considered it a distinct species as this type specimen differed from the Palawan treeshrew by a slightly shorter muzzle, and a lighter colour of the toes, hair of the tail and chest.

[2] It is now recognised as a synonym of the Palawan treeshrew.

[1] This article about a mammal is a stub.