Polystira jelskii (J.C.H. Crosse, 1865)
Polystira jiguaniensis Espinosa,Ortea & Moro, 2017
Polystira juangrinensis Espinosa,Ortea & Moro, 2017
Turridrupa jubata (L.A. Reeve, 1843)
Pleurotoma jukesii (FOSSIL) Seeley †
Gemmula jungi (FOSSIL) Renard, 1994 †
Gemmula kaiparaensis (FOSSIL) (P. Marshall, 1918 †)
Turris kantori R.N. Kilburn, A.E. Fedosov& B.M. Olivera, 2012
Turris kathiewayae R.N. Kilburn, A.E. Fedosov& B.M. Olivera, 2012
Gemmula kieneri (E. Doumet, 1840)
Turris kilburni J.L. Vera-Peláez, R. Vega-Luz& M.C. Lozano, 2000
Lophiotoma kina Puillandre, Fedosov, Zaharias, Azanar-Cormano& Kantor, 2017
Xenuroturris kingae A.W.B. Powell, 1964
Turris konincki (FOSSIL) P. Nyst, 1843 †
Fusimilis kummeli (FOSSIL) N.F. Sohl, 1964 †
Eopleurotoma laeviuscula (FOSSIL) F.E. Edwards †
Eopleurotoma lajonkairii (FOSSIL) (G.P. Deshayes, 1834 †)
Eopleurotoma larteti (FOSSIL) (G.P. Deshayes, 1865 †)
Eopleurotoma larteti normalis (FOSSIL) M.E.A. de Boury, 1899 †
Gemmula laticlavia (FOSSIL) (A.H.E. Beyrich, 1848 †)
Cosmasyrinx latior (FOSSIL) J. Marwick, 1931 †
Gemmula lawsi (FOSSIL) A.W.B. Powell, 1942 †
Lophiotoma leucotropis (A. Adams & L.A. Reeve,1850)
Epalxis lima (FOSSIL) (F.E. Edwards, 1861 †)
Polystira lindae E.J. Petuch, 1987
Gemmula lisajoni B.M. Olivera, 1999
Ptychosyrinx lobata (G.B. III Sowerby, 1903)
Eopleurotoma longicauda (FOSSIL) P. Brebion, 1992 †
Cryptogemma longicostata A.V. Sysoev & Y.I. Kantor,1986
Pleurofusia longirostropsis (FOSSIL) (A. De Gregorio, 1890 †)
Gemmula longwoodensis (FOSSIL) Powell, 1942 †
Gemmula lordhoweensis Y.I. Kantor & A.V. Sysoev,1991
Siphonaliopsis ludovici (FOSSIL) (Raincourt, 1877 †)
Gemmula lululimi B.M. Olivera, 2000
Turris lunulifera (FOSSIL) (A. von Koenen, 1890 †)