Agriculture is the backbone of any economy. Although agriculture is essential to the development of human civilization, increasing productivity frequently results in biodiversity loss and environmental deterioration. Particularly in developing countries like India, eco-friendly farming that prioritizes ecosystem services is becoming a practical approach to attaining sustainable livelihoods and global food security. Biochar is one such promising remedy as the stresses of soil erosion, climate change, and food insecurity increase. It is a carbon-rich substance made by pyrolyzing biomass. In addition to reducing pollution and improving soil health, it also promotes plant growth in stressful environments. The high porosity, alkalinity, and nutrient retention capacity of biochar improve microbial activity, soil fertility, and water-holding capacity. Additionally, it lowers nitrous oxide emissions by up to 50% and contributes significantly to carbon sequestration. Research indicates that soils treated with biochar can boost crop yields by as much as 30%. Notwithstanding these benefits, issues with cost-effectiveness, context-specific performance, and large-scale production continue to prevent widespread adoption. In order to create sustainable and climate-resilient food systems, this chapter examines the many uses of biochar, including improving soil health, reducing abiotic stress, and cleaning up pollutants. It also argues for its incorporation into national agricultural policies and circular bioeconomy frameworks.