Mitrella inscripta (J.W. Brazier, 1861)
Mitrella insolentior (FOSSIL) (N.H. Ludbrook, 1941 †)
Mitrella intermissalineata K. Monsecour & D. Monsecour,2016
Mitrella intexta (J.S. Gaskoin, 1851)
Retizafra intricata (C. Hedley, 1912)
Euplica ionida (P.L. Duclos, 1840)
Suturoglypta iontha (E. Ravenel, 1861)
Anachis isabellei (A.V.M.D. D'Orbigny,1839)
Columbella isabellina J.C.H. Crosse, 1865
Mitrella ischna (FOSSIL) Gardner, 1937 †
Mitrella ischna mitrodita (FOSSIL) Gardner, 1937 †
Dominitaria islahispaniolae (FOSSIL) (C.J. Maury, 1917 †)
Liratilia isolata R.K. Dell, 1956
Zafrona isomella (P.L. Duclos, 1840)
Zafrona isomella nebulosa (A.A. Gould, 1860)
Aesopus ispidula (C. Linnaeus, 1758)
Antimitrella jaci M. Lussi, 2009
Mitrella jacoi M. Lussi, 2002
Aesopus jaffaensis (J.C. Verco, 1910)
Mitrella jahami D. Monsecour & D. Monsecour,2011
Cotonopsis jaliscana P.O. Jung, 1989
Clathranachis japonica (C.B. Adams, 1860)
Aesopus japonicus A.A. Gould, 1860
Metanachis jaspidea (G.B. II Sowerby, 1844)
Mitrella jayi K. Monsecour & D. Monsecour,2016
Costoanachis jeffreysbayensis Lussi, 2017
Astyris joseantonioi J. Espinosa & J.A. Ortea,2014
Pardalinops jousseaumei (J. Drivas & M. Jay,1997)
Anachis juani J. Horro & E. Rolán, 2010
Anachis jungi M.J. Faber, 2004
Zafra kaicherae J. Drivas & M. Jay, 1990
Sulcomitrella kanamaruana (J.T. Kuroda, 1953)
Anachis karukeraensis J. Pelorce & M.J. Faber,2013
Zafra kermadecensis W.R.B. Oliver, 1915
Mitrella kevini J. Pelorce, 2017