Tyrannodoris europaea, is a species of sea slug, a polycerid nudibranch, a marine gastropod mollusc in the family Polyceridae.

The size of this nudibranch's mitochondrial DNA is 14,472 bp,[2] which is one of the smallest among the Metazoa.

[2] This species was described from the Strait of Gibraltar, Spain.

It is found in the Mediterranean Sea and adjacent Atlantic Ocean including the Azores and Canary Islands.

[3]