Retrotortina is a genus of very minute sea snails, marine gastropod molluscs or micromollusks in the family Omalogyridae.^[1]

Species within the genus Retrotortina include:

• Retrotortina cuniculus Barnard, 1969
• Retrotortina damara Rolán & Peñas, 2009
• Retrotortina fuscata Chaster, 1896

• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
• Spencer, H.; Marshall. B. (2009). All Mollusca except Opisthobranchia. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp

• Chaster G.W. (1896). Some new marine mollusca from Tangier. Journal of Malacology. 5(1): 1-4, pl. 1.
• Gofas S. & Warén A. (1998). Europe's smallest gastropod: habitat, distribution and relationships of Retrotortina fuscata (Omalogyridae). Cahiers de Biologie Marine 39: 9-14