Oleandra is a genus of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is the only genus in the family Oleandraceae, which is placed in suborder Polypodiineae, order Polypodiales.
! colspan=1 | Other species include:
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- O. amazonica <small>Miranda & Prado 2021</small>
- O. angusta <small>Copeland 1931</small>
- †O. angustifolia <small>Friedrich 1884</small>
- O. annetii <small>Tardieu 1953</small>
- †O. arctica <small>(von Heer 1871) von Heer 1874</small>
- O. australis <small>Schwartsburd & Prado 2016</small>
- O. baetae <small>Damazio 1906</small>
- O. bradei <small>Christ 1909</small>
- O. brasiliana <small>Schwartsburd & Prado 2016</small>
- O. coriacea <small>Copeland 1912</small>
- O. ejurana <small>Adams 1954</small>
- O. guatemalensis <small>Maxon 1914</small>
- O. hirta <small>Brackenridge 1854</small>
- O. hovenkampii <small>Miranda & Schwartsburd 2021</small>
- O. lehmannii <small>Maxon 1914</small>
- †O. michelotii <small>(Watelet 1865) von Heer 1874</small>
- O. quartziticola <small>Schwartsburd & Prado 2016</small>
- O. steyermarkii <small>Lellinger ex Miranda & Labiak 2021</small>
- O. undulata <small>(Willdenow) Ching 1933</small>
- O. vulpina <small>Christensen 1937</small>
- O. welwitschii <small>(Baker) Pichi Sermolli 1965</small>
- O. werneri <small>Rosenstock 1908</small>
- O. zapatana <small>Lellinger 1977</small>
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