1. Species Pinnularia atacamensis D.Ponce, Molinari & Guiry, 2021
2. Species Pinnularia boliviana S.Blanco, I.Alvarez-Blanco & C.Cejudo-Figueiras, 2012
3. Species Pinnularia claviculus (Gregory) Rabenhorst, 1864
4. Species Pinnularia insociabilis G.Krasske, 1939
5. Species Pinnularia microcapitata B.Van de Vijver, B.Chattová & D.Metzeltin, 2012
6. Species Pinnularia muelleri Haeckel 1899
7. Species Pinnularia ovalis Hilse, 1861
8. Species Pinnularia quadratarea (A.Schmidt) Cleve, 1895
9. Species Pinnularia sakurajimensis Ishii & Ji.Tanaka, 2011
10. Species Pinnularia stauntonii (Grunow) Cleve, 1896
11. Species Pinnularia valdecontroversa Lange-Bertalot, Witkowski & Bąk in Bak et al., 2017
12. Species Pinnularia ambigua Cleve, 1895 accepted as Biremis ambigua (Cleve) D.G.Mann, 1990 accepted as Pinnularia ambigua var. ambigua Cleve, 1895 (synonym)
13. Species Pinnularia chilensis Frenguelli, 1934 accepted as Pinnularia atacamensis D.Ponce, Molinari & Guiry, 2021 (illegitimate name)
14. Species Pinnularia copahuensis Guerrero & Vouilloud, 2021 accepted as Pinnularia delicata Frenguelli, 1942 (Illegitimate name)
15. Species Pinnularia digitoradiata Gregory, 1856 accepted as Navicula digitoradiata (Gregory) Ralfs, 1861 (basionym)
16. Species Pinnularia directa W.Smith, 1853 accepted as Navicula directa (W.Smith) Ralfs, 1861 accepted as Pinnularia directa var. directa W. Smith, 1853 (basionym)
17. Species Pinnularia peregrina Ehrenberg, 1843 accepted as Navicula peregrina (Ehrenberg) Kützing, 1844 (basionym)
18. Species Pinnularia yarrensis (Grunow) A.Jurilj, 1957 accepted as Pinnunavis yarrensis (Grunow) H.Okuno, 1975 accepted as Navicula yarrensis var. yarrensis Grunow in Schmidt et al., 1876 (synonym)
19. Species Pinnularia amphiceros (Kützing) Rabenhorst, 1853 accepted as Navicula amphiceros f. amphiceros Kützing, 1844 (uncertain > unassessed)
20. Species Pinnularia aspera (Ehrenberg) Ehrenberg, 1854 (uncertain > unassessed)
21. Species Pinnularia bombus Ehrenberg, 1844 (uncertain > unassessed)
22. Species Pinnularia cincta Ehrenberg, 1854 (uncertain > unassessed)
23. Species Pinnularia criophila Castracane, 1886 (uncertain > unassessed)
24. Species Pinnularia dalaica Skvortzov, 2012 (uncertain)
25. Species Pinnularia didyma Ehrenberg, 1844 (uncertain > unassessed)
26. Species Pinnularia distans W.Smith, 1853 (uncertain > unassessed)
27. Species Pinnularia elegans (W.Smith) K.Krammer, 1992 accepted as Navicula elegans f. elegans W. Smith, 1853 (uncertain > unassessed)
28. Species Pinnularia heufleri (Grunow) Rabenhorst, 1864 accepted as Navicula heufleri Grunow, 1860 (uncertain > unassessed)
29. Species Pinnularia inflexa Gregory, 1856 (uncertain > unassessed)
30. Species Pinnularia jao Skvortzov, 2012 (uncertain)
31. Species Pinnularia kefvingensis Ehrenberg, 1840 accepted as Navicula kefvingensis (Ehrenberg) Kützing, 1844 (uncertain > unassessed)
32. Species Pinnularia lundii Hustedt, 1954 (uncertain > unassessed)
33. Species Pinnularia mormonorum (Grunow ex A.Schmidt) Boyer, 1916 accepted as Navicula mormonorum Grunow ex A.Schmidt, 1876 (uncertain > unassessed)
34. Species Pinnularia oestrupiaeformis R.Simonsen, 1959 (uncertain > unassessed)
35. Species Pinnularia oregonica Ehrenberg, 1845 (uncertain > unassessed)
36. Species Pinnularia ovalis Hilse, 1860 (uncertain > unassessed)
37. Species Pinnularia permagna Bailey, 1851 (uncertain > unassessed)
38. Species Pinnularia polaris Heiden in Schmidt et al., 1905 (uncertain > unassessed)
39. Species Pinnularia praetexta (Ehrenberg) Ehrenberg, 1854 (uncertain > unassessed)
40. Species Pinnularia protracta (Grunow) Mayer, 1913 accepted as Navicula crucicula var. protracta Grunow, 1880 (uncertain > unassessed)

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