The brown palm civet has a uniformly brown pelage, darker around the head, neck, shoulder, legs, and tail. Sometimes the pelage may be slightly grizzled. Two subspecies have been described on the basis of the colour of the pelage although the colour is extremely variable, ranging from pale buff or light brown to dark brown. The dark tail sometimes has a white or pale-yellow tip. It has no distinct markings on the body or the face as in the Asian palm civet. A distinctive feature is the reversed direction of hair growth on the nape, similar to that in the golden palm civet (P. zeylonensis) of Sri Lanka. It is about as large as the common palm civet, but with a long and sleek tail. The body weight of the males ranges from , head and body length , and tail length from .
