| Cocconeis pediculus Ehrenb., 1838 |
| Cocconeis peltoides Hust., 1939 |
| Cocconeis pensacolae A.W.F. Schmidt, 1894 |
| Cocconeis placentula Ehrenb., 1838 |
| Cocconeis placentula var. euglypta (Ehrenb.) Grunow, 1884 |
| Cocconeis placentula var. lineata (Ehrenb.) van Heurck, 1885 |
| Cocconeis placentula var. placentula Ehrenb., 1838 |
| Cocconeis pseudomarginata W. Greg., 1857 |
| Cocconeis scutellum Ehrenb., 1838 |
| Cocconeis scutellum var. minutissima Grunow, 1880 |
| Cocconeis scutellum var. ornata Grunow, 1868 |
| Cocconeis scutellum var. parva (Grunow) Cleve, 1895 |
| Cocconeis scutellum var. scutellum Ehrenb., 1838 |
| Cocconeis speciosa W. Greg., 1855 |
| Cocconeis stauroneiformis (Van Heurck) Okuno, 1957 |
| Cocconeis sublittoralis Hendey, 1951 |