Agelanthus validus is a species of hemiparasitic plant in the family Loranthaceae, which is found in the Usambara Mountains, Tanzania
A description of the plant is given in Govaerts et al., based on Polhill & Wiens (1999).
A. validus parasitises Catha, Maytenus and Scolopia.
The major threat is habitat conversion for timber and agriculture. Both the quality and extent of its habitat are declining.