Fomitiporia is a genus of fungi in the family Hymenochaetaceae. According to a 2008 estimate, the widely distributed genus contains 11 species, though three new species were identified in 2010 in sub-Saharan Africa using multigene molecular phylogenetic analysis, and two more were named in a 2013 article. In 2011 it was announced that a specimen of the species F. ellipsoidea was discovered with a fruit body that is largest known of any fungus. However, the species has since been moved to Phellinus.