Cantharellus appalachiensis is an edible fungal species in the family Cantharellaceae, commonly known as the Appalachian chanterelle. As its name suggests, it is native to the Appalachian Mountains of eastern North America, though its range extends throughout the eastern United States and parts of southeastern Canada. The genus name Cantharellus is derived from the Greek kantharos, meaning "goblet," while the species epithet appalachiensis refers to its primary geographic origin. Historically, it has been a significant foraged food source for indigenous peoples and later for Appalachian settlers, prized for its abundance in hardwood forests during the humid summer months.

The fungus is a mycorrhizal species that typically grows in association with oak and beech trees. It is characterized by a small to medium-sized cap that often displays a distinctive brown or dark-yellow "eye" or spot in the center, which fades toward a yellow or orange margin. Like other true chanterelles, it possesses decurrent, blunt, vein-like ridges rather than true gills. Its ecology is deeply tied to the health of old-growth and secondary-growth deciduous forests, where it assists in nutrient exchange with its host trees. In modern usage, it remains a favorite among amateur and professional foragers, often gathered alongside the more common golden chanterelle.

As a food source, Cantharellus appalachiensis is highly regarded for its culinary versatility and its delicate, fruity aroma, which is subtler than that of Cantharellus cibarius. The flesh is white and firm, making it suitable for various cooking methods including sautéing, braising, and pickling. It is a staple of contemporary Appalachian "mountain cuisine" and is frequently featured in farm-to-table restaurants across the Eastern Seaboard. Because it is a wild-harvested mushroom that cannot be easily cultivated, its availability is seasonal and dependent on specific rainfall patterns.

Nutritionally, Cantharellus appalachiensis is low in calories but dense in essential nutrients, including potassium, copper, and Vitamin D. It contains several bioactive compounds, primarily polyphenols and carotenoids that contribute to its antioxidant profile. The mushroom also contains chitin in its cell walls, which provides dietary fiber but requires thorough cooking to ensure digestibility. Like many members of its genus, it contains specific polysaccharides that have been investigated for their potential anti-inflammatory and antimicrobial properties in ethnomycological studies.