Cucullanus austropacificus is a species of parasitic nematodes.

[1] It is an endoparasite of the fish Conger cinereus.

The species has been described in 2018 by František Moravec & Jean-Lou Justine from material collected off New Caledonia in the South Pacific Ocean.

[1] Cucullanus austropacificus was characterized by the following morphological features: presence of cervical alae, ventral sucker, alate spicules 1.30–1.65 mm long, conspicuous outgrowths of the anterior and posterior cloacal lips and elongate-oval eggs measuring 89–108 × 48–57 μm.

[1]