Fungi are emerging as a powerful alternative to synthetic dyes, producing a vast range of safe, biodegradable pigments for food, cosmetics, and textiles. Species like Monascus purpureus, Penicillium oxalicum, Aspergillus niger, and Cordyceps militaris generate vivid reds, oranges, and blacks while also offering antioxidant and antimicrobial benefits. Industrial use is already growing—Monascus pigments color foods in Asia, fungal β-carotene is sold as a vitamin A precursor, and melanin from Aspergillus is being explored for cosmetics and UV protection. With the natural pigment market projected to surpass $3.6 billion by 2034, fungi could soon replace petrochemical dyes with sustainable, multifunctional colorants that benefit both health and the environment.