Oeosporangium is a genus of ferns in the subfamily Cheilanthoideae of the family Pteridaceae.

In the Pteridophyte Phylogeny Group classification of 2016 (PPG I) it was included in Allosorus[2] (a genus since subsumed into Aleuritopteris).

It was accepted by the Checklist of the Ferns and Lycophytes of the World as of January 2020[update].

[1] As circumscribed there, the genus is native to the Old World.

[1] As of January 2020[update], the Checklist of Ferns and Lycophytes of the World recognized the following species:[1]