• Gyrodinium Kofoid & Swezy, 1921
• Gyrodinium aciculatum G.Hansen & J.Larsen, 1992
• Gyrodinium acrotrochum J.Larsen, 1996 accepted as Takayama acrotrocha (J.Larsen) Salas, Bolch & Hallegraeff, 2003
• Gyrodinium acutum (Schütt) Kofoid & Swezy, 1921
• Gyrodinium adriaticum Schiller, 1928 accepted as Cochlodinium adriaticum (Schiller) Schiller, 1933
• Gyrodinium antarcticum Hasle, 1960
• Gyrodinium apidiomorphum Norris, 1961
• Gyrodinium arcticum Bursa, 1961
• Gyrodinium ascendans Kofoid, 1931
• Gyrodinium asymmetricum Woloszynska, 1936 accepted as Gymnodinium triceratium Skuja, 1939
• Gyrodinium atractos J.Larsen, 1996
• Gyrodinium aureolum E.M.Hulburt, 1957 accepted as Gymnodinium aureolum (E.M.Hulburt) Gert Hansen, 2000
• Gyrodinium aureum (Conrad) J.Schiller, 1928
• Gyrodinium bepo (Schutt), 1895
• Gyrodinium biconicum Kofoid & Swezy, 1921
• Gyrodinium bistellatum Conrad & Kufferath, 1954
• Gyrodinium britannia Kofoid & Swezy, 1921
• Gyrodinium californicum Bursa, 1962
• Gyrodinium calyptoglyphe Lebour, 1925
• Gyrodinium calyptroglyphe Drebes, 1974 accepted as Sclerodinium calyptroglyphe (Lebour) J.D.Dodge, 1981
• Gyrodinium calyptroglyphe Lebour, 1925 accepted as Sclerodinium calyptroglyphe (Lebour) J.D.Dodge, 1981
• Gyrodinium calyptroglyphe Schiller, 1933 accepted as Sclerodinium calyptroglyphe (Lebour) J.D.Dodge, 1981
• Gyrodinium capsulatum Kofoid & Swezy, 1921
• Gyrodinium carteretense P.H.Campbell, 1973
• Gyrodinium caudatum Kofoid & Swezy, 1921
• Gyrodinium chiasmonetrium Norris, 1961
• Gyrodinium citrinum Kofoid, 1931
• Gyrodinium cladochroma J.Larsen, 1996 accepted as Takayama cladochroma (J.Larsen) M.F.Salas, Bolch & Hallegraeff, 2003
• Gyrodinium cochlea Lebour, 1925
• Gyrodinium cohnii Schiller, 1933 accepted as Crypthecodinium cohnii (Seligo) Javornicky, 1962
• Gyrodinium complanatum P.H.Campbell, 1973
• Gyrodinium concentricum (Lebour) Kofoid & Swezy, 1921
• Gyrodinium conicum Schiller, 1928
• Gyrodinium contortum (Schütt) Kofoid & Swezy, 1921
• Gyrodinium corallinum Kofoid & Swezy, 1921
• Gyrodinium cornutum (Pouchet) Kofoid & Swezy, 1921
• Gyrodinium corsicum Paulmier, Berland, Billard & Nezan, 1995 accepted as Karlodinium corsicum (Paulmier, Berland, Billard & Nezan) Siano & Zingone, 2009
• Gyrodinium crassum (Pouchet) Kofoid & Swezy, 1921
• Gyrodinium culeus Kofoid & Swezy, 1921
• Gyrodinium cuneatum Kofoid & Swezy, 1921
• Gyrodinium dominans Hulbert, 1957
• Gyrodinium dorsum Kofoid & Swezy, 1921
• Gyrodinium elongatum J.Schiller, 1955 accepted as Gymnodinium elongatum (J.Schiller) Moestrup & Calado, 2018
• Gyrodinium estuariale E.M.Hulbert, 1957
• Gyrodinium falcatum Kofoid & Swezy, 1921 accepted as Pseliodinium fusus (F.Schütt) F.Gómez, 2018
• Gyrodinium ferrugineum Kofoid, 1931
• Gyrodinium fissoides Elbrachter, 1979
• Gyrodinium fissum (Levander) Kofoid & Swezy, 1921 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014
• Gyrodinium flagellare Schiller, 1928
• Gyrodinium flavescens Kofoid & Swezy, 1921
• Gyrodinium flavidum Kofoid & Swezy, 1921
• Gyrodinium flavum Kofoid, 1931
• Gyrodinium foliaceum Kofoid & Swezy, 1921
• Gyrodinium formosum P.H.Campbell, 1973
• Gyrodinium fucorum Kofoid & Swezy, 1921 accepted as Crypthecodinium cohnii (Seligo) Javornicky, 1962
• Gyrodinium fulvum Kofoid & Swezy, 1921
• Gyrodinium fusiforme Kofoid & Swezy, 1921
• Gyrodinium fusus (Meunier) Akselman, 1985
• Gyrodinium galatheanum (Baarud) Taylor, 1992 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000
• Gyrodinium glaciale Hada, 1970
• Gyrodinium glaebum Hulburt, 1957
• Gyrodinium glaucum (Lebour) Kofoid & Swezy, 1921 accepted as Lebouridinium glaucum (Lebour) F.Gómez, H.Takayam, D.Moreira & P.López-García, 2016
• Gyrodinium granlandicum Braarud
• Gyrodinium grave (Meunier) Kofoid & Swezy, 1921
• Gyrodinium grenlandicum Braarud, 1935
• Gyrodinium grossestriatum P.H.Campbell, 1973
• Gyrodinium gutrula J.Larsen, 1996
• Gyrodinium guttula J.Larsen, 1996
• Gyrodinium helveticum (Penard) Y.Takano & T.Horiguchi, 2004
• Gyrodinium herbaceum Kofoid & Swezy, 1921
• Gyrodinium heterogrammum J.Larsen, 1996
• Gyrodinium hyalinum (A.J.Schilling) Kofoid & Swezy, 1921 accepted as Gymnodinium hyalinum A.J.Schilling, 1891
• Gyrodinium impendans J.Larsen, 1996
• Gyrodinium impudicum S.Fraga & I.Bravo, 1995 accepted as Gymnodinium impudicum (S.Fraga & I.Bravo) Gert Hansen & Moestrup, 2000
• Gyrodinium instriatum Freudenthal & J.J.Lee, 1963 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014
• Gyrodinium intortum Kofoid & Swezy, 1921
• Gyrodinium jusiforme Koifoid & Swezy, 1921
• Gyrodinium katodiniascens P.H.Campbell, 1973
• Gyrodinium kofoidii Norris, 1961
• Gyrodinium lacryma (Meunier) Kofoid & Swezy accepted as Gyrodinium lacryma (Meunier) Kofoid & Swezy, 1921
• Gyrodinium lacryma (Meunier) Kofoid & Swezy, 1921
• Gyrodinium lebourae Herdmann, 1924 accepted as Gyrodinium lebouriae E.C.Herdman, 1924
• Gyrodinium lebouriae E.C.Herdman, 1924
• Gyrodinium leptogrammum J.Larsen, 1996
• Gyrodinium lingulifera Lebour, 1925
• Gyrodinium linguliferum Lebour, 1925
• Gyrodinium longum (Lohmann) Koifoid & Swezy, 1921
• Gyrodinium louisae Conrad & Kufferath, 1954
• Gyrodinium maculatum Kofoid & Swezy, 1921
• Gyrodinium melo Kofoid & Swezy, 1921
• Gyrodinium metum Hulburt, 1957
• Gyrodinium mitra Kofoid & Swezy
• Gyrodinium mitrum Kofoid & Swezy, 1921
• Gyrodinium moestrupii E.Y.Yoon, N.S.Kang & H.J.Jeong, 2011
• Gyrodinium molopicum (T.H.Harris) Moestrup & Calado, 2018
• Gyrodinium mundulum P.H.Campbell, 1973
• Gyrodinium nagasakiense Takayama & Adachi, 1984 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000
• Gyrodinium nasutum (Wulff) Schiller, 1933
• Gyrodinium nivale Lindemann, 1929 accepted as Borghiella pascheri (Suchlandt) Moestrup, 2018
• Gyrodinium oblongum J.Larsen & D.J.Patterson, 1990 accepted as Moestrupia oblonga (J.Larsen & D.J.Patterson) Gert Hansen & Daugbjerg, 2011