Leptochilus is a fern genus in the family Polypodiaceae, subfamily Microsoroideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).

[1] A molecular phylogenetic study of the subfamily Microsoroideae in 2019 suggested that the genus was monophyletic, being sister to Microsorum, together forming one of the three main clades in the subfamily:[2] Lepisorus s.l.

(7 genera in the PPG I system) Microsorum Leptochilus lecanopteroid genera (4 genera) Goniophlebium The Pteridophyte Phylogeny Group classification of 2016 (PPG I) suggests that the genus contains about 10 species.

[1] As of February 2020[update], the Checklist of Ferns and Lycophytes of the World noted that the species circumscription was "fairly controversial and fluctuating", and accepted 34 species and hybrids:[3]

This Polypodiaceae-related article is a stub.