The global concern about the use of unfriendly and poorly biodegradable materials has steered several researchers within the academic and industrial sectors to focus on agro-wastes. In addition, the growing demand for sustainable and eco-friendly alternatives to conventional materials and energy sources has brought agricultural wastes into useful resources. In this chapter, the potential of coconut husk and shell wastes as bioresources for the production of valuable materials and bioenergy is detailed. Coconut husks and shells exhibit unique physical and chemical properties with potential industrial application and research value. The chapter discusses innovative procedures for converting these wastes into biofuels, biodegradable composites, construction materials, and activated carbon materials. Also, lignocellulose composition in coconut shell and husk wastes and recent developments in valorization methods such as gasification, pyrolysis, and chemical treatments are discussed. Lastly, current research detailing the use of coconut husks and shells and the challenges pertaining to their valorization are described.