Osbornia is a monotypic genus of mangrove in the myrtle family Myrtaceae.

[4] The sole species is Osbornia octodonta, commonly known as the myrtle mangrove, which inhabits coastal areas of Borneo, the Philippines, the Lesser Sunda Islands.

[2] It was first described in 1862 by Ferdinand von Mueller, based on material collected in Trinity Bay.

[5] who published the description in his tome Fragmenta Phytographiæ Australiæ.

[5] It is usually found on the landward side of mangrove forests.