Heleobia castellanosae is a species of small freshwater snail, an operculate gastropod mollusc in the family Cochliopidae.
The specific name castellanosae is in honour of Argentinian malacologist Zulma Judith Ageitos de Castellanos.
Parasites of Heleobia castellanosae include trematodes Lobatostoma jungwirthi and Lobatostoma pacificum.