This chapter explores the application of sustainable biopolymers in pharmaceutical, medical, and food industries, highlighting their unique characteristics and role in achieving environmental sustainability. It highlights the benefits of biodegradability and reduced carbon footprint, as well as their potential in pharmaceuticals. The medical industry uses biopolymers in biocompatible implants, tissue engineering scaffolds, and wound dressings, while the food industry uses biopolymers in edible films, coatings, and packaging. The chapter addresses challenges, regulatory considerations, and technological challenges, emphasizing material development, process optimization, and sustainability assessment. By promoting eco-friendly solutions and addressing environmental concerns, sustainable biopolymers contribute to a more sustainable future.