Tochuina nigromaculata is a species of dendronotid nudibranch.

It is a marine gastropod mollusc in the family Tritoniidae.

[2] Originally described as a Tritonia this species was moved to the revised genus, Tochuina, in 2020 as a result of an integrative study of the family Tritoniidae.

[3] Tochuina nigromaculata was described from the Okhotsk Sea.

It is a deep water species.