Vexillum malcolmense (J.C. Melvill & R. Standen,1901)
Thala maldivensis H. Turner, S. Gori& R. Salisbury, 2007
Pusia malleopunctum W.O. Cernohorsky, 1981
Thala malvacea F.P. Jousseaume, 1898
Uromitra mangilopse (FOSSIL) J. Gardner, 1937 †
Thala manolae H. Turner, S. Gori& R. Salisbury, 2007
Costapex margaritatus A.E. Fedosov, M. Herrmann& P. Bouchet, 2017
Vexillum marotiriense (M. Herrmann& R. Salisbury, 2012)
Pusia marrowi W.O. Cernohorsky, 1973
Costapex martinorum (W.O. Cernohorsky, 1986)
Thaluta maxmarrowi (W.O. Cernohorsky, 1980)
Vexillum mccauslandi R. Salisbury & J. Wolff,2005
Pusia mediomaculatum (G.B. III Sowerby, 1870)
Latiromitra meekiana (W.H. Dall, 1889)
Ceratoxancus melichrous Y.I. Kantor & P. Bouchet,1997
Vexillum melongena (J.B.P.A. Lamarck, 1811)
Vexillum menehune R. Salisbury, 2011
Thala merrilli G. Rosenberg & R. Salisbury,2014
Vexillum mica (L.A. Reeve, 1845)
Vexillum michaelianum R. Salisbury, 2011
Vexillum michaui (J.C.H. Crosse& P.H. Fischer, 1864)
Costellaria michaui wilsi J.A. Buijse & H. Dekker,1990
Vexillum micra H.A. Pilsbry, 1921
Costellaria micramadum (FOSSIL) W.P. Woodring, 1928 †
Pusia microzonias (J.B.P.A. Lamarck, 1811)
Uromitra mikkulum (FOSSIL) J. Gardner, 1937 †
Vexillum militare (L.A. Reeve, 1845)
Thala milium (L.A. Reeve, 1845)
Pusia millecostatum (W.J. Broderip, 1836)
Thala minagaorum M. Herrmann & M. Chino,2015
Vexillum minghuii S.I. Huang, 2017
Thala minutecancellata (FOSSIL) (Degrange-Touzin, 1894 †)
Austromitra minutenodosa W.O. Cernohorsky, 1980
Costellaria miocenica (FOSSIL) (M.A. Peyrot, 1928 †)
Vexillum mirabile (A. Adams, 1853)