Zospeum robustum is a cave-dwelling species of air-breathing land snails (Eupulmonata, Ellobioidea, Carychiinae).

The species was established based on specimens that previously were classified as Z. obesum, Z. isselianum or Z. frauenfeldii.

The peristome is roundish, sometimes quite massive, in most cases with a small, straight parietal shield.

[1] Zospeum robustum occurs in Croatia in three separate areas: 1) In the caves Budina špilja and Markov ponor in the Lika-Senj county, as well as in Ostrvička špilja and the upper part of the Lukina jama-Trojama cave system.

3) In three caves in and around the Žumberak Mountains: Vrlovka, Pušina jama and Židovske kuće.