Pleurotomella brenchleyi is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

It contains eight whorls, slightly angulated at the upper part, and somewhat compressed next the sutures, longitudinally more or less prominently ribbed.

The outer lip is denticulated at the edge, crenate within, and margined with white.

[2] The shell is moderately solid, light brown, inclining to ash-color towards the apex.

[3] This marine species is endemic to Australia and occurs off New South Wales at depths between 12 mm and 100 m.