The grey-bellied squirrel (Callosciurus caniceps) is a species of rodent in the family Sciuridae. It is found in forests, plantations and gardens in Peninsular Malaysia, Thailand, southern Myanmar, southern China (Yunnan) and possibly western Laos. It has been introduced in the Ryukyu Islands in Japan. As suggested by its name, its belly is usually grey, though sometimes reddish on the sides. Depending on subspecies and season, the upperparts are grey, yellowish-olive or reddish.

Rudd (1965) gave the weights of 2 adult males trapped in Malaysia as follow : 247.7 and 251.5 g.