Cucullanus parapercidis is a species of parasitic nematodes.

[1] It is an endoparasite of fish, the Yellowbar sandperch Parapercis xanthozona (Pinguipedidae, Perciformes), which is the type-host, and the Speckled sandperch Parapercis hexophtalma.

The species has been described in 2020 by František Moravec & Jean-Lou Justine from material collected off New Caledonia in the South Pacific Ocean.

[1]