• Peridinium Ehrenberg, 1830
• Peridinium abei Paulsen, 1931 accepted as Protoperidinium abei (Paulsen, 1931) Balech, 1974
• Peridinium acanthophorum Balech, 1962 accepted as Protoperidinium acanthophorum (Balech, 1962) Balech, 1974
• Peridinium achromaticum Levander, 1902 accepted as Protoperidinium achromaticum (Levander, 1902) Balech, 1974
• Peridinium aciculiferum Lemmermann, 1900 accepted as Apocalathium aciculiferum (Lemmermann) Craveiro, Daugbjerg, Moestrup & Calado, 2016
• Peridinium aciculiferum f. inerme Woloszynska, 1937
• Peridinium aciculiferum var. juratense Chodat & F.Chodat, 1925 accepted as Apocalathium aciculiferum var. juratense (Chodat & F.Chodat) Moestrup & Calado, 2018
• Peridinium acuminatum Ehrenberg, 1836 accepted as Scrippsiella acuminata (Ehrenberg) Kretschmann, Elbrächter, Zinssmeister, S.Soehner, Kirsch, Kusber & Gottschling, 2015
• Peridinium acutangulum (Lemmermann) Lemmermann (uncertain)
• Peridinium acutipes P.-A.Dangeard, 1927 accepted as Protoperidinium acutipes (P.-A.Dangeard, 1927) Balech, 1974
• Peridinium acutum G.Karsten, 1907
• Peridinium adeliense Balech, 1958 accepted as Protoperidinium adeliense (Balech, 1958) Balech, 1974
• Peridinium adense Matzenauer, 1933 accepted as Protoperidinium adense (Matzenauer, 1933) Balech, 1974
• Peridinium adriaticum H.Broch
• Peridinium adulterum Balech, 1971 accepted as Protoperidinium adulterum (Balech, 1971) Balech, 1974
• Peridinium aequalis W.S.Kent (uncertain)
• Peridinium aequatoriale Balech, 1971 accepted as Protoperidinium aequatoriale (Balech, 1971) Balech, 1974
• Peridinium affine Balech, 1958 accepted as Protoperidinium affine (Balech, 1958) Balech, 1974
• Peridinium africanoides P.-A.Dangeard, 1927 accepted as Protoperidinium latispinum (Mangin, 1926) Balech, 1974
• Peridinium africanum Lemmermann, 1907 accepted as Parvodinium africanum (Lemmermann) Carty, 2008
• Peridinium africanum f. tatricum (Woloszynska) M.Lefèvre, 1932 accepted as Parvodinium africanum var. tatricum (Woloszynska) Moestrup, 2018
• Peridinium africanum var. contactum Er.Lindemann, 1919 accepted as Parvodinium africanum (Lemmermann) Carty, 2008
• Peridinium africanum var. intermedium (Playfair) M.Lefèvre, 1932 accepted as Parvodinium africanum (Lemmermann) Carty, 2008
• Peridinium africanum var. javanicum (Woloszynska) M.Lefèvre, 1932 accepted as Parvodinium africanum var. javanicum (Woloszynska) K.P.Cavalcante, Craveiro, Calado & L.Cardoso, 2017
• Peridinium africanum var. spinulosum (Woloszynska) M.Lefèvre, 1932 accepted as Parvodinium africanum var. spinulosum (Woloszynska) Moestrup, 2018
• Peridinium africanum var. tatricum (Woloszynska) J.Schiller, 1935 accepted as Parvodinium africanum var. tatricum (Woloszynska) Moestrup, 2018
• Peridinium africanum var. tatricum f. mezeniense Kisselev, 1960 (uncertain)
• Peridinium alatum Garbini, 1902 accepted as Peridinium willei Huitfeldt-Kaas, 1900
• Peridinium aliferum Gaarder accepted as Protoperidinium aliferum (Gaarder) Balech, 1974
• Peridinium allorgei M.Lefèvre, 1927
• Peridinium ambiguum Er.Lindemann, 1931 accepted as Peridinium umbonatum F.Stein, 1883 accepted as Parvodinium umbonatum (F.Stein) Carty, 2008
• Peridinium americanum Gran & Braarud, 1935 accepted as Protoperidinium americanum (Gran & Braarud, 1935) Balech, 1974
• Peridinium amplum Matzenauer, 1933 accepted as Protoperidinium amplum (Matzenauer, 1933) Balech, 1974
• Peridinium ampulla Balech, 1971 accepted as Protoperidinium ampulla (Balech, 1971) Balech, 1974
• Peridinium anceps Meunier, 1910 accepted as Protoperidinium anceps (Meunier, 1910) Balech, 1974
• Peridinium andrzejowskii Woloszynska, 1921 (uncertain)
• Peridinium anglicum G.S.West, 1909 accepted as Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup, 2009
• Peridinium anguipes Balech, 1967 accepted as Protoperidinium anguipes (Balech, 1967) Balech, 1974
• Peridinium angustum P.-A.Dangeard, 1927 accepted as Protoperidinium angustum (P.-A.Dangeard, 1927) Balech, 1974
• Peridinium annulatum C.A.Kofoid & J.R.Michener, 1911 (uncertain)
• Peridinium anomaloplaxum Balech, 1964 accepted as Protoperidinium anomaloplaxum (Balech, 1964) Balech, 1974
• Peridinium antarcticum Schimper ex Karsten, 1905 accepted as Protoperidinium antarcticum (Schimper ex Karsten) Balech, 1974
• Peridinium anthonyi Fauré-Fremiet, 1908 accepted as Protoperidinium anthonyi (Fauré-Fremiet, 1908) Balech, 1974
• Peridinium apiculatum (G.S.West) Lindemann, 1928 accepted as Peridinium palatinum Lauterborn, 1896 accepted as Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup, 2009
• Peridinium apiculatum Penard, 1891 accepted as Gonyaulax clevei Ostenfeld, 1902
• Peridinium apiculatum f. anglicum (G.S.West) Er.Lindemann, 1928 (uncertain)
• Peridinium apiculatum f. laeve (H.Huitfeldt-Kaas) Er.Lindemann, 1928 accepted as Palatinus apiculatus var. laevis (Huitfeldt-Kaas) S.C.Craveiro, A.J.Calado, Daugbjerg & Moestrup, 2009
• Peridinium apiculatum var. cristatum (Er.Lindemann) Er.Lindemann, 1928 accepted as Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup, 2009
• Peridinium applanatum Manguin, 1926 accepted as Protoperidinium applanatum (Mangin) Balech, 1974
• Peridinium archiovatum Balech, 1958 accepted as Protoperidinium archiovatum (Balech) Balech, 1974
• Peridinium arcticum Ehrenberg accepted as Ceratium arcticum (Ehrenberg) Cleve, 1901
• Peridinium areolatum Peters, 1928 accepted as Protoperidinium areolatum (Peters, 1928) Balech, 1974
• Peridinium asperum G.H.Wailes, 1928 accepted as Protoperidinium asperum (G.H.Wailes, 1928) Balech, 1974
• Peridinium aspidiotum Balech, 1964 accepted as Protoperidinium aspidiotum (Balech, 1964) Balech, 1974
• Peridinium asymmetrica T.H.Abé
• Peridinium asymmetricum Ostenfeld, 1915 accepted as Dissodium asymmetricum (Mangin) Loeblich III, 1970 accepted as Diplopsalopsis bomba (Stein) J.D.Dodge & S.Toriumi, 1993
• Peridinium australe (Playfair) Playfair, 1920 accepted as Peridinium willei Huitfeldt-Kaas, 1900
• Peridinium avellana Lebour, 1925 accepted as Protoperidinium avellana (Meunier, 1919) Balech, 1974
• Peridinium baicalense Kiselev & V. Zvetkov, 1935 accepted as Apocalathium baicalense (Kisselev & V.Zvetkov) Craveiro, Daugbjerg, Moestrup & Calado, 2016
• Peridinium balechii R.Akselman accepted as Protoperidinium balechii (R.Akselman) Balech, 1988
• Peridinium baliense Lindemann, 1931 accepted as Chimonodinium baliense (Er.Lindemann) Moestrup & Calado, 2018
• Peridinium balticum (Levander) Lemmermann, 1900 accepted as Durinskia dybowskii (Woloszynska) Carty, 2014
• Peridinium belgicum A.Wulff (uncertain)
• Peridinium belizense Carty, 2003 accepted as Parvodinium belizense (Carty) Carty, 2008
• Peridinium bellulum Balech, 1971 accepted as Protoperidinium bellulum (Balech, 1971) Balech, 1974
• Peridinium berolinense Lemmermann, 1900 accepted as Tyrannodinium edax (A.J.Schilling) Calado, 2011
• Peridinium berolinense var. apiculatum Lemmermann, 1907 accepted as Tyrannodinium edax (A.J.Schilling) Calado, 2011
• Peridinium biconicum Abé, 1927
• Peridinium biconicum P.-A.Dangeard, 1927 accepted as Protoperidinium biconicum (P.-A.Dangeard, 1927) Balech, 1974
• Peridinium bicorne L.K.Schmarda (uncertain)
• Peridinium bidens Lemmermann, 1910
• Peridinium bimucronatum J.Schiller, 1935 accepted as Protoperidinium bimucronatum (J.Schiller) Balech, 1967
• Peridinium bipes F.Stein, 1883
• Peridinium bipes f. apoda Boltovskoy, 1977 accepted as Peridinium bipes var. occultatum Er.Lindemann, 1920
• Peridinium bipes f. excisum (Lemmermann) M.Lefèvre, 1932 accepted as Peridinium bipes F.Stein, 1883
• Peridinium bipes f. globosum Er.Lindemann, 1920
• Peridinium bipes f. occultatum (Er.Lindemann) M.Lefèvre, 1932 accepted as Peridinium bipes var. occultatum Er.Lindemann, 1920
• Peridinium bipes f. tabulatum (Ehrenberg) M.Lefèvre, 1932 accepted as Peridinium bipes F.Stein, 1883
• Peridinium bipes var. excisum Lemmermann, 1900 accepted as Peridinium bipes F.Stein, 1883
• Peridinium bipes var. exisum Lemmermann, 1900 accepted as Peridinium bipes F.Stein, 1883
• Peridinium bipes var. occultatum Er.Lindemann, 1920
• Peridinium bipes var. ocultatum Lindemann, 1918 accepted as Peridinium bipes F.Stein, 1883
• Peridinium bipes var. travectum Lefevre, 1932
• Peridinium bispinum Schiller, 1937 accepted as Protoperidinium bispinum (Schiller, 1937) Balech, 1974
• Peridinium blackmani Murray & Whitting, 1899 accepted as Heterodinium blackmanii (Murray & Whitting) Kofoid, 1906
• Peridinium borgei (Lemmermann) Lemmermann, 1910 accepted as Peridiniopsis borgei Lemmermann, 1904
• Peridinium braarudi Schiller, 1937 accepted as Protoperidinium braarudii (Schiller, 1937) Balech, 1974
• Peridinium brachypus J.Schiller, 1935 accepted as Protoperidinium brachypus (Schiller) Balech, 1974
• Peridinium brasiliense Borics & Grigorszky, 2005
• Peridinium breve (Paulsen) Paulsen, 1907 accepted as Protoperidinium pyriforme subsp. breve (Paulsen) Balech, 1988
• Peridinium brevipes Paulsen, 1908 accepted as Protoperidinium brevipes (Paulsen, 1908) Balech, 1974
• Peridinium brintoni Balech, 1962 accepted as Protoperidinium pouchetii (Kofoid & Michener) F.J.R.Taylor & Balech ex Balech, 1988
• Peridinium brochii Kofoid & Swezy, 1921 accepted as Protoperidinium brochii (Kofoid & Swezy, 1921) Balech, 1974
• Peridinium bulbosum Gaarder, 1954 accepted as Protoperidinium bulbosum (Gaarder, 1954) Balech, 1974
• Peridinium bulla Meunier, 1910 accepted as Protoperidinium bulla (Meunier, 1910) Balech, 1974
• Peridinium californicum (Javornick) S.Rodriguez et al., 1999 accepted as Unruhdinium durandii (S.Rodriguez, Couté, Ten-Hage & Mascarell) Moestrup & Calado, 2018
• Peridinium callosum E.H.Jörgensen (uncertain)
• Peridinium candelabrum Ehrenberg, 1860 accepted as Tripos candelabrum (Ehrenberg) F.Gómez, 2013
• Peridinium capdevillei Balech, 1959 accepted as Protoperidinium capdevillei (Balech, 1959) Balech, 1974
• Peridinium capurroi Balech, 1959 accepted as Protoperidinium capurroi (Balech, 1959) Balech, 1974