• Ceratium tripos (O.F.Müller) Nitzsch, 1817 accepted as Tripos muelleri Bory de Saint-Vincent, 1826
• Ceratium tripos arcuatum f. heterocamptum Jörgensen, 1899 accepted as Tripos heterocamptus (Jörgenen) F.Gómez, 2013
• Ceratium tripos baltica f. truncatum Lohmann, 1908 accepted as Tripos truncatus (Lohmann) F.Gómez, 2013
• Ceratium tripos f. atlantica Ostenfeld, 1903 accepted as Ceratium tripos var. atlanticum (Ostenfeld) Paulsen, 1908
• Ceratium tripos f. balticum F.Schütt, 1895 accepted as Tripos balticus (F.Schütt) F.Gómez, 2013
• Ceratium tripos f. contortum (Gourret) Karsten, 1906
• Ceratium tripos f. contrarium (Gourret) B.Schroder, 1900
• Ceratium tripos f. hiemale Paulsen, 1907
• Ceratium tripos f. longissimum Schröder, 1900 accepted as Tripos longissimus (Schröder) F.Gómez, 2013
• Ceratium tripos f. massiliense (Gourret) Schröder, 1900 accepted as Tripos massiliensis (Gourret) F.Gómez, 2013
• Ceratium tripos f. parallelogrammon Hensen, 1911 (uncertain)
• Ceratium tripos f. parallelum Johs. Schmidt, 1901 accepted as Tripos muelleri f. parallelus (Schmidt) F.Gómez, 2013
• Ceratium tripos f. ponticum (Jorgensen) Schiller, 1937
• Ceratium tripos f. reflexum (Cleve) Hensen, 1911
• Ceratium tripos f. semipulchellum (Jörgensen) Peters, 1932
• Ceratium tripos f. subsalsum Ostenfeld, 1903 accepted as Tripos subsalsus (Ostenfeld) F.Gómez, 2013
• Ceratium tripos macroceras f. palmatum Schröder, 1900 accepted as Tripos palmatus (Schröder) F.Gómez, 2013
• Ceratium tripos subsp. balticum Schütt, 1892
• Ceratium tripos subsp. declinatum Karsten accepted as Ceratium declinatum (Karsten) Jørgensen, 1911 accepted as Tripos declinatus (G.Karsten) F.Gómez, 2013
• Ceratium tripos subsp. divaricatum (Lemmermann) Jörgensen, 1920 accepted as Tripos divaricatus (Lemmermann) F.Gómez, 2013
• Ceratium tripos subsp. pulchellum (Schröder) Peters accepted as Tripos pulchellus (Schröder) F.Gómez, 2013
• Ceratium tripos subsp. vultur (Cleve) Karsten, 1907 accepted as Tripos vultur (Cleve) F.Gómez, 2013
• Ceratium tripos var. arctica Claparède & Lachman, 1859 accepted as Ceratium arcticum (Ehrenberg) L.Maggi, 1880 accepted as Tripos arcticus (Vanhöffen) F.Gómez, 2013
• Ceratium tripos var. arcuatum Gourret, 1883 accepted as Tripos arcuatus (Gourret) F.Gómez, 2021
• Ceratium tripos var. atlanticum (Ostenfeld) Paulsen, 1908
• Ceratium tripos var. atlanticum Ostenfeld, 1903 accepted as Ceratium tripos var. atlanticum (Ostenfeld) Paulsen, 1908
• Ceratium tripos var. atlanticum f. neglectum (Ostenfeld) Paulsen, 1908 (uncertain)
• Ceratium tripos var. baltica
• Ceratium tripos var. breve Ostenfeld & Schmidt, 1901 accepted as Tripos brevis (Ostenfeld & Johannes Schmidt) F.Gómez, 2013
• Ceratium tripos var. bucephalum Cleve, 1897 accepted as Tripos bucephalus (Cleve) F.Gómez, 2013
• Ceratium tripos var. carriense (Gourret) Lemmermann, 1899 accepted as Tripos carriensis (Gourret) F.Gómez, 2013
• Ceratium tripos var. contortum Gourret, 1883 accepted as Tripos contortus (Gourret) F.Gómez, 2013
• Ceratium tripos var. contrarium Gourret, 1883 accepted as Tripos contrarius (Gourret) F.Gómez, 2013
• Ceratium tripos var. curvicorne Daday, 1888 accepted as Tripos curvicornis (Daday) F.Gómez, 2013
• Ceratium tripos var. dispar Pouchet, 1883 accepted as Ceratium gibberum var. dispar (Pouchet) Sournia, 1966
• Ceratium tripos var. divaricatum Lemmermann, 1899 accepted as Tripos divaricatus (Lemmermann) F.Gómez, 2013
• Ceratium tripos var. furcellatum Lemmermann, 1899 (uncertain)
• Ceratium tripos var. gibbera (Gourret) B.Schroder, 1900 accepted as Tripos gibberus (Gourret) F.Gómez, 1883
• Ceratium tripos var. gracile Gourret, 1883 accepted as Neoceratium symmetricum (Pavillard) F.Gómez, D.Moreira & P.Lopez-Garcia, 2010 accepted as Tripos symmetricus (Pavillard) F.Gómez, 2013
• Ceratium tripos var. gracile Pouchet, 1883
• Ceratium tripos var. hamatum Aurivillius, 1898 (uncertain)
• Ceratium tripos var. horridum Cleve, 1897 accepted as Tripos horridus (Cleve) F.Gómez, 2013
• Ceratium tripos var. indicum (Böhm) F.J.R.Taylor, 1976 (uncertain)
• Ceratium tripos var. inequale Gourret, 1883 (uncertain > unassessed)
• Ceratium tripos var. inflexum Gourret, 1883 accepted as Tripos inflexus (Gourret) F.Gómez, 2013
• Ceratium tripos var. limulus Pouchet, 1883 accepted as Tripos limulus (Pouchet) F.Gómez, 2013
• Ceratium tripos var. lineatum
• Ceratium tripos var. longinum Karsten, 1906 accepted as Tripos longinus (Karsten) F.Gómez, 2013
• Ceratium tripos var. macroceras
• Ceratium tripos var. macroceros (Ehrenberg) Claparède & Lachmann, 1859 accepted as Tripos macroceros (Ehrenberg) Hallegraeff & Huisman, 2020
• Ceratium tripos var. macroceros f. armatum Karsten, 1905
• Ceratium tripos var. macroceros f. intermedium Jörgensen, 1899 accepted as Tripos intermedius (Jörgenen) F.Gómez, 2013
• Ceratium tripos var. massiliense Gourret, 1883 accepted as Tripos massiliensis (Gourret) F.Gómez, 2013
• Ceratium tripos var. neglectum (Ostenfeld) Paulsen, 1907
• Ceratium tripos var. platycorne (Daday) Lemmermann, 1899
• Ceratium tripos var. platycorne (Daday) Ostenfeld, 1899
• Ceratium tripos var. ponticum Jorgensen, 1920
• Ceratium tripos var. porrectum (Karsten) Margalef, 1967
• Ceratium tripos var. protuberans G.Karsten, 1906 accepted as Tripos protuberans (G.Karsten) F.Gómez, 2013
• Ceratium tripos var. puchellum (Schröder) López, 1955 accepted as Ceratium pulchellum Schröder, 1906 accepted as Tripos pulchellus (Schröder) F.Gómez, 2013
• Ceratium tripos var. pulchellum (Schroder) Lopez ex Sournia, 1973 accepted as Tripos pulchellus (Schröder) F.Gómez, 2013
• Ceratium tripos var. reticulatum Pouchet, 1883 accepted as Tripos reticulatus (Pouchet) F.Gómez, 2013
• Ceratium tripos var. robustum Karsten, 1907 accepted as Tripos karstenii var. robustus (Karsten) F.Gómez, 2013
• Ceratium tripos var. subsalsum (Ostenfeld) Paulsen, 1907 accepted as Tripos subsalsus (Ostenfeld) F.Gómez, 2013
• Ceratium tripos var. tripos (Müller) Nitzsch, 1817
• Ceratium tripos var. typicum Gourret, 1883 (uncertain > unassessed)