Exserohilum is a genus of fungi in the family Pleosporaceae. The Exserohilum species are known for causing blight and human immune system diseases. The sexual reproductive(or ascigerous) states of Exserohilum species are known as Setosphaeria. The type species is Exserohilum turcicum. This genus is among three dematiaceous that are categorized for containing pathogens leading to diseases like phaeohyphomycosis.