Flaviporus is a genus of poroid fungi in the family Steccherinaceae.
Flaviporus was circumscribed by American mycologist William Alphonso Murrill in 1905. He designated the type species as Flaviporus rufoflavus; this taxon is now considered the same as Flaviporus brownii. The generic name combines the Latin word flavus ("light yellow") with the Ancient Greek (pore).
Murrill described the characteristics of Flaviporus as follows: "Hymenium annual, often reviving, epixylous, sessile, dimidiate, imbricate; surface encrusted, glabrous: context thick, woody, brown; tubes thin-walled, minute, regular: spores smooth, hyaline."