Lophodermium pinastri is a fungus in the genus Lophodermium. Like most species in the genus, it is an endophyte and saprophyte of pine (Pinus spp.) needles.
Lophodermium pinastri has been reported on numerous species of Pinus and can act as an endophyte, a saprophyte, or in rare instances, as a pathogen. It is frequently confused with Lophodermium seditiosum - a more serious and damaging pathogen than L. pinastri.