Bosmania membranacea is a species of fern in the family Polypodiaceae, subfamily Microsoroideae. It is native to tropical and subtropical Asia, from India to Japan and south to Sulawesi.
Bosmania membranacea was first described by David Don in 1825 as Polypodium membranaceum. It has been known by many synonyms, including Microsorum membranaceum. It was transferred from Microsorum to the new genus Bosmania by Weston L. Testo in 2019 as a result of a molecular phylogenetic study.