| Navicula meyeri var. meyeri Cleve-Euler, 1953 |
| Navicula microstauron (Ehrenb.) Hérib., 1903 |
| Navicula minima Grunow, 1880 |
| Navicula minuscula Grunow, 1880 |
| Navicula minutissima (Kütz.) Grunow, 1860 |
| Navicula molaris Grunow, 1863 |
| Navicula molestiformis Hust., 1949 |
| Navicula monilifera Cleve, 1895 |
| Navicula muscaeformis Grunow, 1875 |
| Navicula mutica Kütz., 1844 |
| Navicula mutica f. goeppertiana Bleisch, 1861 |
| Navicula mutica var. cohnii (Hilse) Grunow, 1880 |
| Navicula neoventricosa Hust., 1966 |
| Navicula nivalis Ehrenb., 1853 |
| Navicula nolens Simonsen, 1959 |
| Navicula oblongella Nägeli ex Kütz., 1849 |
| Navicula obsoleta Hust., 1942 |
| Navicula obtusa (Lagerst.) Hust., 1909 |
| Navicula orbiculata Patrick, 1959 |
| Navicula ostrogothica Cleve-Euler, 1953 |