| Polypodium bradeorum Rosenst., 1912 |
| Polypodium californicum Kaulf., 1824 |
| Polypodium calirhiza S.A. Whitmore & A.R. Sm., 1991 |
| Polypodium callolepis Fée, 1857 |
| Polypodium cancellatum Fée, 1852 |
| Polypodium cheilostictum Fée, 1857 |
| Polypodium chiapense A.M. Evans & A.R. Sm., 1980 |
| Polypodium chnoodes Spreng., 1822 |
| Polypodium christensenii Maxon, 1909 |
| Polypodium ciliatum Willd., 1810 |
| Polypodium collinsii Maxon, 1916 |
| Polypodium colpodes Kuntze, 1850 |
| Polypodium colysoides Maxon & Copel., 1941 |
| Polypodium concinnum Willd., 1810 |
| Polypodium confluens Liebm., 1849 |
| Polypodium consimile Mett., 1864 |
| Polypodium consimile var. bourgeauanum E. Fourn., 1872 |
| Polypodium conterminans Liebm., 1849 |
| Polypodium conzattii Weath., 1922 |
| Polypodium cordifolium L., 1753 |