Borneodendron aenigmaticum is a species of tree in the family Euphorbiaceae of the monotypic genus Borneodendron.

Its name means "enigmatic Borneo-plant"; so-called because it is a monotypic taxon and is endemic to north Borneo (Sabah).

The species is specialised to ultramafic soils[4] from 15 to 1070 meters elevation.

It is found in numerous protected areas and is not considered threatened.

[1] This Euphorbiaceae-related article is a stub.