Alansmia is a genus of ferns in the family Polypodiaceae, subfamily Grammitidoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).

[2] The genus is mainly native to the Neotropics, with a few species in tropical Africa.

[1] As of May 2024[update], the Checklist of Ferns and Lycophytes of the World accepted the following species and hybrids:[1]

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