Eatoniella delli is a species of marine gastropod mollusc in the family Eatoniellidae.

The species was originally identified by the name Eatoniella (Cerostraca) delli, and was named by Ponder after named after Richard Dell.

[2] Eatoniella delli has a small conical dark-purple shell.

The animal has colourless tentacles.

[1] The holotype of the species was collected on 21 August 1963 on the Bream Tail at Mangawhai Heads in Northland by Ponder himself, who identified the species living on Corallina seaweeds.