Trochetiopsis ebenus, the dwarf ebony or Saint Helena ebony, is a species of flowering plant that is endemic to the island of Saint Helena in the southern Atlantic Ocean.

Saint Helena ebony is now critically endangered in the wild, being reduced to two wild individuals on a cliff, but old roots are sometimes found washed out of eroding slopes (relicts of its former abundance).

These are collected on the island and used for inlay work, an important craft on Saint Helena.

It can be propagated from cuttings, and many island gardens now boast a fine ebony bush.

Trochetiopsis ebenus has staminodes that are dark maroon or "black".