Myoporum tenuifolium is a plant in the figwort family, Scrophulariaceae and it is endemic to New Caledonia and the Loyalty Islands.

It can be distinguished from Myoporum crassifolium, (the only other member of the genus to occur in New Caledonia) by its very thin leaves and its glabrous flowers.

[2] The flowers are borne in leaf axils singly or in groups of up to four on a flattened pedicel 6–12.5 mm (0.24–0.49 in) long.

[2] Myoporum tenuifolium was first formally described in 1786 by Georg Forster in Florulae Insularum Australium Prodromus in 1810.

[3][4] The specific epithet (tenuifolium) is derived from the Latin words tenuis meaning "slender" and folium, "leaf".