Maladera siargaoensis is a species of beetle of the family Scarabaeidae. It is found in the Philippines (Siargao).
Adults reach a length of about 7 mm. They are blackish-brown and opaque. The antennae are reddish-yellow. The pronotum has ciliated sides and the surface is moderately densely punctate. The elytra are seriate-punctate, with the interstices very slightly convex and covered with minute punctations.