The shift towards sustainable agriculture is vital for addressing pressing global issues, including food security, environmental harm and resource depletion. Materials derived from biomass present an innovative pathway to sustainability by leveraging renewable, biodegradable and cost-effective resources to boost agricultural output while reducing ecological impact. This review examines the wide-ranging potential of biomass-based materials, emphasising their roles in enhancing soil health, increasing crop yields and promoting integrated waste management. It also highlights recent progress in developing biochar, biopolymers and fertilisers, showcasing their roles in improving nutrient recycling, supporting carbon sequestration and decreasing reliance on synthetic agricultural inputs. Furthermore, the paper explores the contributions of advanced technologies such as pyrolysis and anaerobic digestion in maximising the efficient use of biomass. The review addresses obstacles like scalability, cost considerations and environmental challenges while offering policy recommendations and identifying key areas for future research. Ultimately, this comprehensive analysis underscores the significant impact of biomass-derived materials in driving sustainable agricultural practices and advancing a circular economy.