Laetiporus is a genus of edible mushrooms found throughout much of the world. Some species are commonly known as sulphur shelf, chicken of the woods, the chicken mushroom, or the chicken fungus because many think they taste like chicken. The name "chicken of the woods" is not to be confused with the edible polypore, Maitake (Grifola frondosa) known as "hen of the woods", or with Lyophyllum decastes, known as the "fried chicken mushroom".

Individual "shelves" range from 2-10 inches across. These shelves are made up of many tiny tubular filaments (hyphae). The mushroom grows in large brackets - some have been found that weigh over 100 pounds (45 kg). It is most commonly found on wounds of trees, mostly oak, though it is also frequently found on eucalyptus, yew, sweet chestnut, and willow, as well as conifers in some species. Laetiporus species produce brown rot in the host on which they grow.