• Katodinium Fott, 1957
• Katodinium astigmatum Christen, 1959 accepted as Gymnodinium astigmatum Moestrup & Calado, 2018
• Katodinium asymmetricum (Massart) A.R.Loeblich, III, 1965
• Katodinium auratum Bursa, 1970
• Katodinium austriacum (J.Schiller) A.R.Loeblich III, 1965 accepted as Speroidium austriacum (J.Schiller) Moestrup & Calado, 2018
• Katodinium bohemicum (Fott) Litvinenko, 1977 accepted as Gymnodinium bohemicum Fott, 1938
• Katodinium campylops (T.M.Harris) A.R.Loeblich III, 1965 accepted as Opisthoaulax campylops (T.M.Harris) Calado, 2011
• Katodinium crassifilum (Schiller) A.R.Loeblich III, 1965 accepted as Nusuttodinium crassifilum (J.Schiller) Moestrup & Calado, 2018
• Katodinium dorsalisulcum E.M.Hulbert, J.J.A.McLaughlin & P.A.Zahl, 1960 accepted as Gymnodinium dorsalisulcum (Hulbert, J.J.A.McLaughlin & Zahl) Shauna Murray, Salas & Hallegraeff, 2007
• Katodinium dorsalosulcum Hulburt (uncertain)
• Katodinium edax (Schiller) Loeblich III, 1965
• Katodinium fastigatum B.Kirschhoff & Barbara Meyer, 1995 accepted as Opisthoaulax fastigata (B.Kirchhoff & Barbara Meyer) Calado, 2011
• Katodinium fontinale C.E.M.Bicudo & Skvortsov, 1970 accepted as Gymnodinium fontinale (C.E.M.Bicudo & Skvortsov) Moestrup, 2018
• Katodinium fungiforme (Anissimova) Fott, 1957 accepted as Speroidium fungiforme (Anisimova) Moestrup & Calado, 2018
• Katodinium galeatum (W.Conrad) A.R.Loeblich, 1965
• Katodinium glandula (Herdman) Loeblich, 1965 accepted as Katodinium glandulum (Herdman) Loeblich III, 1965 accepted as Aduncodinium glandula (E.C.Herdman) N.S.Kang, H.J.Jeong & Moestrup, 2015
• Katodinium glandulum (Herdman) Loeblich III, 1965 accepted as Aduncodinium glandula (E.C.Herdman) N.S.Kang, H.J.Jeong & Moestrup, 2015
• Katodinium glaucum (Lebour) Loeblich III, 1965 accepted as Lebouridinium glaucum (Lebour) F.Gómez, H.Takayam, D.Moreira & P.López-García, 2016
• Katodinium hiemale (J.Schiller) A.R.Loeblich III, 1965 accepted as Borghiella pascheri (Suchlandt) Moestrup, 2018
• Katodinium hyperxanthoides (T.M.Harris) Loeblich III, 1965 accepted as Gymnodinium hyperxanthoides (T.M.Harris) Moestrup, 2018
• Katodinium hyperxanthum (T.M.Harris) A.R.Loeblich III, 1965 accepted as Gymnodinium hyperxanthum (T.M.Harris) Moestrup, 2018
• Katodinium intermedium Christen, 1959 accepted as Gymnodinium intermedium Moestrup & Calado, 2018
• Katodinium mazuricum Javornicky, 1965 accepted as Gymnodinium mazuricum (Javornicky) Moestrup, 2018
• Katodinium minutum Sournia, 1973 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995
• Katodinium molopicum (T.M.Harris) A.R.Loeblich III, 1965 accepted as Gyrodinium molopicum (T.H.Harris) Moestrup & Calado, 2018
• Katodinium monadicum (Deising) Javornicky, 1970 accepted as Gymnodinium partitum (Perty) Moestrup, 2018
• Katodinium montanum (J.Schiller) A.R.Loeblich III, 1965 accepted as Nusuttodinium montanum (J.Schiller) Moestrup & Calado, 2018
• Katodinium musaei (Danysz) A.R.Leoblich III, 1965 accepted as Opisthoaulax musei (Danysz) Calado, 2011
• Katodinium musei (Danysz) Fott, 1957 accepted as Opisthoaulax musei (Danysz) Calado, 2011
• Katodinium nieuportense (Conrad) Fott, 1957
• Katodinium notatum (Skuja) Christen, 1961 accepted as Opisthoaulax woloszynskae (J.Schiller) Calado, 2011
• Katodinium palustre (A.J.Schill.) (uncertain)
• Katodinium parvulum Litvinenko, 1963 (uncertain)
• Katodinium piscinale Fott, 1957 accepted as Opisthoaulax piscinalis (Fott) Calado, 2011
• Katodinium planum (Fott) Loeblich III, 1965 accepted as Gymnodinium planum (Fott) Moestrup, 2018
• Katodinium pluristigmatum P.H.Campbell, 1973
• Katodinium polyplastidum Popovsky, 1968 accepted as Gymnodinium partitum (Perty) Moestrup, 2018
• Katodinium pratense (Baumeister) Loeblich III, 1965 accepted as Gymnodinium pratense (Baumeister) Moestrup, 2018
• Katodinium ptyrticum (Harris) A.R.Loeblich III, 1965 accepted as Opisthoaulax tetragonops (T.M.Harris) Calado, 2011
• Katodinium redekei (Conrad & Kufferath) Loeblich
• Katodinium rotundatum (Lohmann) Loeblich III, 1965 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995
• Katodinium ruppiae (Conrad) Loeblich III, 1965
• Katodinium sanctipaulense C.E.M.Bicudo & Skvortsov, 1970 accepted as Gymnodinium sanctipaulense (C.E.M.Bicudo & Skvortsov) Moestrup, 2018
• Katodinium schilleri (Woloszynska) A.R.Loeblich III, 1965 accepted as Gymnodinium schilleri (Woloszynska) Moestrup, 2018
• Katodinium simile H.R.Christen, 1961
• Katodinium spirodinioides Christen, 1961 accepted as Gymnodinium spirodinioides Moestrup & Calado, 2018
• Katodinium stigmaticum (Lindemann) A.R.Loeblich III, 1965
• Katodinium tetragonops (T.M.Harris) A.R.Loeblich III, 1965 accepted as Opisthoaulax tetragonops (T.M.Harris) Calado, 2011
• Katodinium thiophilum (Conrad) A.R.Loeblich, 1965
• Katodinium tubulatum (Rampi) Sournia, 1973
• Katodinium uncinatum (Kufferath) Loeblich, 1965
• Katodinium vernale Christen, 1961 accepted as Gymnodinium vernum Moestrup, 2018
• Katodinium vierae Javornicky, 1970 accepted as Gymnodinium vierae (Javornicky) Moestrup, 2018
• Katodinium viride Christen, 1961
• Katodinium vorticella (F.Stein) Loeblich III, 1965 accepted as Opisthoaulax vorticella (F.Stein) Calado, 2011
• Katodinium woloszynskae (Schiller) Loeblich III, 1965 accepted as Opisthoaulax woloszynskae (J.Schiller) Calado, 2011
• Katodinium woloszynskae var. notata (Skuja) Loeblich III, 1965 accepted as Katodinium woloszynskae (Schiller) Loeblich III, 1965 accepted as Opisthoaulax woloszynskae (J.Schiller) Calado, 2011
• Katodinium woloszynskae var. notatum (Skuja) A.R.Loeblich III, 1965 accepted as Opisthoaulax woloszynskae (J.Schiller) Calado, 2011