Protorhus is a small genus of Afrotropical trees in the family Anacardiaceae. It is dioecious, with male and female flowers on separate plants.
Protorhus is placed in tribe Rhoeae, subfamily Anacardioideae of the family Anacardiaceae. The genus Abrahamia with 19 Madagascan taxa was separated from Protorhus in 2004.(Pell 2004)
The species are:
Formerly listed;