Areca nut (Areca catechu L.) husk derived from the fruiting body has gained attention due to its potential usage in various applications. As a by-product of processing areca nuts, the husk offers a significant potential for value-adding into bioproducts, biomaterials, and biofuels. Though previously thought of as waste, this biomass can be processed to create valuable products. High-value bioproducts like cellulose, hemicellulose, and bioactive chemicals used in the paper, textile, pharmaceutical, cosmetic, and nutraceutical industries are among the potential users of the areca nut husk conversion products. The husk may also be processed to create eco-friendly fabrics, biochar, activated carbon, and biodegradable composites, which will help provide sustainable resources for building, farming, and packaging. Moreover, the husk has the potential as a feedstock for manufacturing biofuels like biogas, biodiesel, bioethanol, etc., providing sustainable energy alternatives. The value-adding of areca nut husk highlights the importance of this agricultural waste-to-resource transformation in driving both economic growth and environmental sustainability toward the realization of a circular economy.