Agelanthus atrocoronatus is a species of hemiparasitic plant in the family Loranthaceae.

[3][1] It is known only from the Mufindi Plateau in Tanzania, and was last collected in the 1980s.

[1] A. atrocoronatus is parasitic on various hosts including Vitaceae (the wine-grape family), is bird pollinated, and found in grassland and at the edges of montane forest.

[1] The major threats to this species are from urban expansion, and from the exploitation of the trees which host it.

[1] Conservation efforts center on local tea estates which currently afford protection to the forests remaining within them.