The Mittermeier's mouse lemur (Microcebus mittermeieri), is a species of mouse lemur known only from Anjanaharibe-Sud Special Reserve in Madagascar. The species is named in honor of primatologist Russell Mittermeier, who is President of Conservation International. Mittermeier's mouse lemur is the smallest of the east coast mouse lemurs. Its body is light reddish-brown to rust with orange tints at the base of its limbs. The belly is whitish-brown and there is a distinctive white patch on the snout, past the level of the eyes. The tail tip is black.