| Gymnodinium gelbum Kof., 1931 |
| Gymnodinium gibbera J. Schill., 1928 |
| Gymnodinium gracile Bergh, 1881 |
| Gymnodinium grammaticum (Pouchet) Kof. & Swezy, 1921 |
| Gymnodinium hamulus Kof. & Swezy, 1921 |
| Gymnodinium herbaceum Kof. & Swezy, 1921 |
| Gymnodinium impudicum (Fraga & I. Bravo) Gert Hansen & Moestrup, 2000 |
| Gymnodinium incisum Kof. & Swezy, 1921 |
| Gymnodinium incoloratum W. Conrad & Kuff., 1954 |
| Gymnodinium instriatum (Freud. & J.J. Lee) Coats, 2002 |
| Gymnodinium lohmannii Paulsen, 1908 |
| Gymnodinium lunula F. Schütt, 1895 |
| Gymnodinium marinum Saville-Kent, 1881 |
| Gymnodinium micrum (B. Leadb. & J.D. Dodge) A.R. Loebl. III, 1970 |
| Gymnodinium mirabile Penard, 1891 |
| Gymnodinium mitratum Schiller, 1933 |
| Gymnodinium multistriatum Kof. & Swezy, 1921 |
| Gymnodinium nanum Schiller, 1928 |
| Gymnodinium nelsonii Martin, 1929 |
| Gymnodinium obesum J. Schill., 1932 |