Rhodocactus is a genus of flowering plant in the cactus family Cactaceae, native to central South America.

[4] Asai and Miyata regard the formation of brachyblast leaves as a distinguishing characteristic of the genus in comparison to Pereskia.

[3] Rhodocactus was originally described as a subgenus of Pereskia by Alwin Berger, and was raised to a genus in 1936 by Frederik Marcus Knuth.

Molecular phylogenetic studies from 2005 onwards suggested that when circumscribed in this way, Pereskia was not monophyletic, and consisted of three clades.

[5] Leuenbergeria Pereskia s.s. Rhodocactus core cacti As of April 2021[update], Plants of the World Online accepted the following species:[2]