Boreoscala keaseyensis (FOSSIL) J.W. Durham, 1937 †
Scalaria keepingi (FOSSIL) Gardner †
Scalina kendacensis (FOSSIL) P.O. Jung, 1971 †
Alora kiiensis T. Nakayama, 2000
Epitonium kilburni J. Drivas & M. Jay, 1989
Epitonium kiyohimae T. Nakayama, 2000
Epitonium klunzingeri (S. Clessin, 1897)
Epitonium kobelti S. Clessin, 1897
Cirsotrema koeneni (FOSSIL) A.W. Janssen †
Opalia komitica (FOSSIL) (C.R. Laws, 1944 †)
Dubariscala korobceevensis (FOSSIL) (Gerasimov, 1992 †)
Epitonium koshimagani (T. Nakayama, 1991)
Opalia koskinum (C. Hedley, 1909)
Epitonium koyamai (T. Nakayama, 1995)
Epitonium kraussi (P. Nyst, 1871)
Epitonium krebsii (O.A.L. Mörch, 1875)
Cirsotrema krousma R.N. Kilburn, 1985
Crisposcala krystafoviczi (FOSSIL) Klusznikov, 1958 †
Cirsotrema kuriense (FOSSIL) J. Marwick, 1942 †
Claviscala kuroharai J.T. Kuroda in M. Azuma,1960
Amaea kushimotensis T. Nakayama, 2000
Epitonium labeo (F.P. Jousseaume, 1912)
Epitonium lachrymulum (F.P. Jousseaume, 1912)
Epitonium lacrima R.N. Kilburn, 1985
Pseudoclaviscala laevicosta (FOSSIL) D.T. Dockery, 1993 †
Epitonium lagunarum W.H. Dall, 1917
Epitonium laidlawi (J.C. Melvill & R. Standen,1903)
Epitonium lamarcki (FOSSIL) (G.P. Deshayes, 1861 †)
Opalia lamarckii (FOSSIL) G.P. Deshayes, 1861 †
Epitonium lamberti (FOSSIL) (G.P. Deshayes, 1861 †)
Gyroscala lamellosa (J.B.P.A. Lamarck, 1822)
Epitonium lamellosum J.B.P.A. Lamarck, 1822
Acrilloscala lamyi (M.E.A. de Boury, 1909)
Acirsa lanceolata (FOSSIL) (G.B. Brocchi, 1814 †)
Eglisia lanceolata L.A. Reeve, 1865