Renewable nanomaterials represent a frontier in sustainable materials science, leveraging natural or bio-based sources to create nanoscale materials with enhanced properties and reduced environmental impact. These materials, derived from renewable resources such as cellulose, chitin, and lignin, offer biodegradability, biocompatibility, and potentially lower carbon footprints compared to traditional counterparts. Applications of renewable nanomaterials span various industries, including packaging, textiles, construction, and biomedical sectors. For instance, cellulose nanocrystals enhance the strength and barrier properties of packaging materials, while chitin nanoparticles are used in wound dressings and drug delivery systems. Challenges include scaling production, ensuring consistent quality, and integrating renewable nanomaterials into existing manufacturing processes. Ongoing research focuses on developing sustainable extraction methods, optimizing material performance, and exploring novel applications in energy storage, water purification, and sustainable building materials.