In this work, the results of surveys of land and freshwater molluscs collected during a BioBlitz event held in Georgia in 2019 are reported. In total, 54 mollusc species belonging to 27 families were recorded at 44 sampling sites in Georgia. During the BioBlitz core event held from 4-7 July 2019 in the Kazbegi Municipality (Mtskheta- Mtianeti) in the Greater Caucasus in northern Georgia, 25 terrestrial gastropods and five freshwater species (three gastropods and two bivalves) were found. With regard to the terrestrial malacofauna, this amounts to 47.2 % of the known land snails and slugs known from the core area, including two species not previously recorded …. link to the paper