Fomes hemitephrus is a bracket fungus in the family Fomitopsidaceae. First named Polyporus hemitephrus by English naturalist Miles Joseph Berkeley in 1855, it was given its current name by the English mycologist Mordecai Cubitt Cooke in 1885. The species is found in Australia and New Zealand, and is one of the most common polypores in those countries, causing a white rot on several tree species.