| Navicula festiva Krasske, 1925 |
| Navicula filicinum Harv., 1860 |
| Navicula flagellifera Hust., 1939 |
| Navicula flanatica Grunow, 1860 |
| Navicula forcipata Grev., 1859 |
| Navicula forcipata var. nummularia (Grev.) Cleve, 1895 |
| Navicula formenterae Cleve, 1895 |
| Navicula formicina Grunow, 1878 |
| Navicula frequens van Heurck, 1909 |
| Navicula galea Peragallo, 1891 |
| Navicula gastrum (Ehrenb.) Kütz., 1844 |
| Navicula gelida Grunow, 1884 |
| Navicula gemmata Grev., 1859 |
| Navicula gemmatula Grunow, 1875 |
| Navicula gibba (Ehrenb.) Kütz., 1844 |
| Navicula giebelii A. Schmidt, 1875 |
| Navicula globiceps (Greg.) Ralfs, 1861 |
| Navicula goeppertiana (Bleisch) Sm., 1876 |
| Navicula gracilis Ehrenb., 1838 |
| Navicula gracilis var. gracilis Ehrenb., 1838 |