Cyanodontia is a fungal genus in the family Meruliaceae. It is a monotypic genus, circumscribed by mycologist Kurt Hjorstam in 1987 to contain the single species Cyanodontia spathulata. This is a toothed crust fungus that is found in East Africa. The type was collected by Leif Ryvarden in Tanga, Tanzania in 1973.