Cyclommatus canaliculatus is a species of beetles belonging to the family Lucanidae.
Cyclommatus canaliculatus reaches a length of about 28- in males, about in females. The basic colour is dark red-brown or blackish. The mandibles are long and their outer margin is straight, while their inner margins are armed at about one third of its length with a strong tooth. The mandibles are finely granulated and sub-opaque, but the apical portion is glossy. The upper side of the head shows a large flattened depression. The sides of the prothorax have an angular tooth. The elytra are covered with punctures.
This species can be found in Malaysia, Borneo, Java and Nias (Indonesia).