| Polypodium salicifolium Vahl, 1807 |
| Polypodium sanctae-rosae (Maxon) C. Chr., 1913 |
| Polypodium saxicola Baker ex Jenman, 1877 |
| Polypodium schaffneri Fée, 1857 |
| Polypodium scouleri Hook. & Grev., 1829 |
| Polypodium semicordatum Sw., 1788 |
| Polypodium semihirsutum Klotzsch, 1847 |
| Polypodium semihirsutum var. fuscosetosum Hieron., 1904 |
| Polypodium senile Fée, 1857 |
| Polypodium serpentinum Christ, 1906 |
| Polypodium serrulatum (Sw.) Mett., 1856 |
| Polypodium sessilifolium Desv., 1827 |
| Polypodium skinneri Hook., 1862 |
| Polypodium sloanei Poepp. ex Spreng., 1827 |
| Polypodium sororium Humb. & Bonpl. ex Willd., 1810 |
| Polypodium stenoloma D.C. Eaton, 1873 |
| Polypodium subflabelliforme Rosenst., 1909 |
| Polypodium subincisum Willd., 1810 |
| Polypodium submarginale Langsd. & Fisch., 1810 |
| Polypodium subpetiolatum Hook., 1840 |