Guraleus tasmanicus is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
The length of the shell attains 12 mm, its diameter 5 mm.
(Original description) The shell is fusiform, attenuate at both ends, ivory white, between the lirae tinged with very pale red. The spire is raised and longer than the aperture. The shell contains 7 whorls, convex, angular behind and excavate above. They are elegantly ribbed lengthwise (12–14 in body whorl), transversely regularly lirate. The ribs are angular, smooth, shining. The lirae are broad and flattened. The aperture is narrowly ovate. The outer lip is thin.
This marine species is endemic to Australia and can be found off New South Wales, South Australia, Tasmania and Victoria.
