Crossopoma inflammatum B. Rensch, 1933
Japonia inornata (E.A. Smith, 1894)
Japonia inouei J.T. Kuroda & T. Habe,1961
Japonia insularis O.F. von Möllendorff,1901
Cyclophorus involutus (O.F. Müller, 1774)
Cyathopoma iridescens K.C. Emberton, 2010
Opisthoporus iris (H.H. Godwin-Austen,1889)
Aulopoma itieri F.E. Guérin-Méneville,1847
Aulopoma itieri hofmeisteri F.H. Troschel, 1847
Chamalycaeus itonis J.T. Kuroda, 1943
Alycaeus jagori E.C. Von Martens
Rhiostoma jalorensis (E.R. Sykes, 1903)
Spirostoma japonica (C.B. Adams, 1867)
Spirostoma japonica nakadai H.A. Pilsbry, 1901
Chamalycaeus japonicus (E.C. Von Martens, 1865)
Chamalycaeus japonicus pilsbryi W. Kobelt, 1902
Cyclophorus jerdoni (W.H. Benson, 1851)
Cyclophorus jourdyi (L.J. Morlet, 1886)
Rhiostoma jousseaumi J.J.M. de Morgan, 1885
Japonia jucunda (E.A. Smith, 1894)
Craspedotropis juvenilis J.J. Vermeulen, 1999
Alycaeus kapayanensis J.J.M. de Morgan, 1885
Japonia katorii H. Minato, 1985
Leptopoma kejong W.J. Clench & S. Archer,1931
Alycaeus kelantanensis E.R. Sykes, 1902
Japonia keppeli (H.H. Godwin-Austen,1889)
Alycaeus khasiacus H.H. Godwin-Austen, 1871
Cyclophorus khongensis Thach & F. Huber, 2017
Cyclotus kibleri H.C. Fulton, 1903
Cyclophorus kikaiensis H.A. Pilsbry, 1902
Cyclophorus kinabaluensis E.A. Smith, 1895
Japonia kinabaluensis (E.A. Smith, 1895)
Cipangocharax kiuchii H. Minato & J.M. Abe,1982
Ditropopsis koperbergi (A. Zilch, 1955)
Elgonocyclus koptaweliensis (J. Germain, 1934)