Penicillium bilaii is a species of fungus in the genus Penicillium. It is a saprotrophic fungus, meaning it obtains its nutrients by decomposing organic matter. This species is not commonly known for any particular use or impact on human society. Some species of Penicillium are used in the production of certain foods and beverages, such as blue cheese and fermented foods, as well as being a source of antibiotics, but there is limited information available on the specific use or potential applications of Penicillium bilaii.