Fuente: Citrus Byproducts Extraction The growing environmental concern posed by petroleum-based plastic packaging has fueled worldwide action to find more sustainable alternatives. One of the most viable solutions is the conversion of food waste like fruit peel, crop wastes, and agro-industrial by-products into a raw material for biodegradable packaging. Food waste rich in biopolymers like starch, cellulose, pectin, proteins, and chitosan is a source for producing eco-friendly materials. Innovations in material science, green chemistry, and nanotechnology have enabled the conversion of these waste-derived biopolymers into functional packaging films with enhanced mechanical strength, barrier properties, and bioactive functions. This chapter comprehensively reviews the potential of biodegradable packaging materials derived from plant-based, seafood, dairy, animal, and microbial-derived polymers from food wastes, offering insights into extraction techniques, material modifications, and applications. This approach aligns with circular economy principles and presents an integrated strategy for reducing both plastic pollution and food waste.