Pseudonebularia gracilefragum is a species of sea snail, a marine gastropod mollusk in the family Mitridae, the miters or miter snails.

[2] This species attains a size of 20 mm.

Tropical Indo-Pacific (Maldives, Indonesia, Vietnam, Philippines, Okinawa, Papua New Guinea, Solomons, Marquesas Islands).

From fairly shallow subtidal water (8-20 m) to deep water (180 m), on bottoms of sand and coral rubble.

This Mitridae-related article is a stub.