| 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 |
| Polypodium costatum Kunze, 1834 |
| Polypodium crassifolium L., 1753 |
| Polypodium crassinervatum (Fée) Kiaersk., 1874 |
| Polypodium crenatum Sw., 1788 |
| Polypodium crenatum var. ghiesbreghtii Hook., 1864 |
| Polypodium cryptocarpon Fée, 1857 |
| Polypodium cultratum Willd., 1810 |
| Polypodium cupreolepis A.M. Evans, 1969 |
| Polypodium cyathicola Copel., 1941 |