Halgerda batangas is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Discodorididae.

It is found in the tropical western Pacific, including: Indonesia, Philippines, Solomon Islands, Mabul, New Britain, Davao Gulf, Malaysia, Papua New Guinea, Sulawesi, Great Barrier Reef and Taiwan.

It is characterized by a network of fine, solid, red-orange lines on the mantle.

It has a white band around the mantle containing low rounded orange-capped tubercles.

The mantle tubercles range in size from small rounded bumps to tall, prominent structures.