| Hantzschia distincte-punctata Hust., 1921 |
| Hantzschia elongata (Hantzsch) Grunow, 1880 |
| Hantzschia marina (Donk.) Grunow, 1877 |
| Hantzschia virgata (Roper) Grunow, 1880 |
| Neodenticula Akiba & Y. Yanagisawa, 1985 |
| Neodenticula seminae (Simonsen & Kanaya) Akiba & Y. Yanagisawa, 1985 |
| Nitzschia Hassall, 1845 |
| Nitzschia acicularis (Kütz.) W. Sm., 1853 |
| Nitzschia actinastroides (Lemmerm.) Goor, 1925 |
| Nitzschia actydrophila Hasle, 1965 |
| Nitzschia acuta Cleve, 1878 |
| Nitzschia agnita Hustedt, 1957 |
| Nitzschia americana Hasle, 1964 |
| Nitzschia amphibia Grunow, 1862 |
| Nitzschia angularis W. Sm., 1853 |
| Nitzschia angularis var. affinis (Grunow) Grunow, 1881 |
| Nitzschia angustata (W. Sm.) Grunow, 1880 |
| Nitzschia angusteforaminata Lange-Bert., 1980 |
| Nitzschia antillarum (Cleve & Grunow) Meister, 1937 |
| Nitzschia archibaldii Lange-Bert.,1980 |