Cerberilla mosslandica is a species of sea slug, an aeolid nudibranch, and a marine heterobranch mollusc in the family Aeolidiidae.

It has also been reported near Duncan, Vancouver Island, British Columbia, Canada.

A specimen from St. Peter the Great Bay, Russia, exhibited more white pigment and lines on the cerata, suggesting it may be a different species.

[3] All Cerberilla species have a broad foot, and the cerata are numerous, arranged in transverse rows across the body.

In this species, the body is mostly translucent white with a pinkish hue on the head.