| Pinnularia radiosa Rabenh., 1853 |
| Pinnularia radiosa var. angusta (Grunow) Rabenh., 1864 |
| Pinnularia rectangulata (W. Greg.) Rabenh., 1864 |
| Pinnularia reichardtii Krammer, 2000 |
| Pinnularia rhombica Hust., 1943 |
| Pinnularia rhomboelliptica Krammer, 2000 |
| Pinnularia rupestris Hantzsch, 1861 |
| Pinnularia saprophila Lange-Bert., Kobayasi & Krammer, 2000 |
| Pinnularia schimanskii Krammer, 2000 |
| Pinnularia schoenfelderi Krammer, 1992 |
| Pinnularia schroederi (Hust.) B.J.Cholnoky, 1959 |
| Pinnularia silviasalae Metzeltin, Lange-Bert. & F. García-Rodríguez, 2005 |
| Pinnularia similiformis Krammer, 1992 |
| Pinnularia simmilis Hust., 1937 |
| Pinnularia sinistra Krammer, 1992 |
| Pinnularia socialis (Palmer) Hustedt, 1913 |
| Pinnularia stidolphii Krammer, 2000 |
| Pinnularia stoermeri Metzeltin & Lange-Bert., 2007 |
| Pinnularia stomatophora (Grunow) Cleve, 1895 |
| Pinnularia stomatophora var. erlangensis (Ant. Mayer) Krammer, 2000 |