Clavus maestratii is a species of sea snail, a marine gastropod mollusc in the family Drilliidae.
The length of the shell attains 11.8 mm, its diameter 4.5 mm.
The shell is shiny and glossy and ranges in color from pale brown or grayish-brown to orange-brown, with the ribs usually being lighter in color.
The shell has a short siphonal canal (a narrow tube structure that extends from the opening of the shell) and a slightly contracted opening near its base.
This marine species occurs off New Caledonia.