Commidendrum robustum, the Saint Helena gumwood, is a species of tree endemic to Saint Helena, Ascension and Tristan da Cunha.

[2] Though it is now comparatively rare, it was once one of the most abundant trees of mid-elevations of the island of Saint Helena in the South Atlantic Ocean.

A small tree to 7–8 m, it was cut extensively for fuel in the early years of settlement of the island by the English East India Company.

The Commidendrum robustum is closely related to the Melanodendron integrifolium, Black cabbage tree, which also inhabits Saint Helena.

Today, the closest relatives are South African, in the small shrub genus Felicia Cass.