Goniodoris violacea is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.

[2] This species was first described from New Caledonia.

It has not been found elsewhere.

[3] This goniodorid nudibranch is translucent violet in colour, with a dark violet edge along the pallial margin.

Goniodoris violacea probably feeds on bryozoans or colonial ascidians but the diet is apparently not yet determined.