| Pinnularia stomatophora var. irregularis Krammer, 2000 |
| Pinnularia streptoraphe Cleve, 1891 |
| Pinnularia subbrevistriata Krammer, 2000 |
| Pinnularia subcapitata W. Gregory, 1856 |
| Pinnularia subcapitata var. elongata Krammer, 1992 |
| Pinnularia subcapitata var. paucistriata (Grunow) Cleve, 1895 |
| Pinnularia subcapitata var. semicruciata Metzeltin & Krammer, 1998 |
| Pinnularia subcapitata var. subrostrata Krammer, 1992 |
| Pinnularia subcommutata Krammer, 1992 |
| Pinnularia subcommutata var. nonfasciata Krammer, 1992 |
| Pinnularia subflexuosa Hust., 1934 |
| Pinnularia subgibba Krammer, 1992 |
| Pinnularia subgibba var. capitata Metzeltin & Krammer, 1998 |
| Pinnularia subrabenhorstii Krammer, 2000 |
| Pinnularia subrostrata (A. Cleve) A. Cleve, 1955 |
| Pinnularia subrupestris Krammer, 1992 |
| Pinnularia substomatophora Hust., 1934 |
| Pinnularia subviridis A. Cleve, 1955 |
| Pinnularia tabellaria Ehrenb., 1843 |
| Pinnularia tagliaventiae Lange-Bert. & Metzeltin, 2003 |