See text Pterocactus (from Greek pteron, "wing", referring to the saucer-shaped seed of these plants) is a genus of the cactus family (Cactaceae), comprising 9 species.

All Pterocactus have tuberous roots and are endemic to South and Western Argentina.

A molecular phylogenetic analysis placed the genus in the tribe Tephrocacteae.

[1] Species of the genus Pterocactus according to Plants of the World Online As of January 2023[update]:[2]

This Cactaceae article is a stub.