To address the growing environmental issues related with synthetic materials, it is imperative to produce sustainable and eco-friendly materials. Research on bio-based materials, such as biofibers, biopolymers, biofilms, and biocomposites, has exploded in the last few years. An extensive summary of the most recent developments in various fields is given in this book chapter. The remarkable mechanical, chemical, and physical qualities of biofibers sourced from plants and animals make them attractive options for use as reinforcing agents in polymer composites. PLA, PHA, and starch-based materials are examples of biopolymers that have drawn a lot of interest as possible substitutes for synthetic plastics. Biofilms derived from biopolymers have superior barrier qualities and antimicrobial efficacy and hold promise for intelligent packaging uses. Biofiber-reinforced biocomposites have improved mechanical and biodegradability characteristics. Furthermore, protein-based biomaterials have special chances for the development of sustainable materials. This book chapter emphasizes the significance of looking into new sources of biorenewable materials and the requirement for additional study to address current issues. Bio-based materials are positioned to revolutionize a number of industries and help create a more environmentally friendly future due to the increasing demand for sustainable solutions.