This paper presents the first published listing of the holdings of type specimens of mollusc in The Manchester Museum (University of Manchester, UK), the fourth largest mollusc collection in Britain. Type material relating to 480 taxa are included in the present catalogue, mainly coming from the collections of A Abercrombie (India), RD Darbishire, Prof. AC Haddon (Torres Straits), Rev. J Hadfield (Lifu, Loyalty Islands), LJ Shackleford (especially Marginella), GC Spence (especially African land snails and Urocoptis and many specimens from M Connolly and HB Preston), FW Townsend (Persian Gulf), syntype material from the Scottish National Antarctic Expedition (1902-1904) and that received from the Smithsonian Institution in 1973 in exchange. There is undoubtedly more type material within the collection which is not identified as such as yet.