Doto hydrallmaniae is a species of sea slug, a nudibranch, a marine gastropod mollusc in the family Dotidae.

[2] This species was first described from the Isle of Man, United Kingdom.

This nudibranch is translucent white with dark red spots on the ceratal tubercles.

[3] Its body size attains 10 mm.

Doto hydrallmaniae feeds on the hydroid Hydrallmania falcata, family Sertulariidae.