Perotrochus caledonicus is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.

The type material that Perotrochus caledonicus is made of from southern New Caledonia typically has a smooth shell, but a more pustulose variation was later found and initially considered just a form of the same species.

Collectors and dealers continue to distinguish between the "smooth" and "pustulose" forms, with some suggesting the latter might even qualify as a separate species.

[3] This marine species occurs off New Caledonia.

This Pleurotomariidae-related article is a stub.