Conuber sordidum (originally described as Natica sordida by Swainson) is a species of predatory sea snail, a marine gastropod mollusk family Naticidae, the moon snails.

[3] Conuber sordidum is predatory, feeding mostly on bivalves and gastropods.

[4] The species is also known to prey on the soldier crab Mictyris longicarpus by drilling predation.

[5][6] To catch soldier crabs, C. sordidum uses the same stereotyped behaviour as previously described for moon snails hunting shelled molluscan prey.

[6] On intertidal muddy sand flats near mangroves or sea weed.