Sipalinus gigas is a species of beetles belonging to the family Curculionidae.

Sipalinus gigas can reach a length of 12–30 millimetres (0.47–1.18 in).

The surface is covered with brownish crusty coating.

Elytra shows dark brown stripes with whitish areas bearing tubercles.

The species can be divided into the following two subspecies: This species can be found in Korea, China, Japan, Himalayas, India and islands of Australasia, from Philippines to New Guinea, Solomon Islands and eastern Australia.