Site-specific nutrient management (SSNM) has emerged as a transformative approach in modern agriculture, offering precision-driven nutrient application strategies tailored to spatial and temporal variability within cereal fields. This innovation enables the efficient use of fertilizers by aligning nutrient supply with crop demand, thereby minimizing environmental losses and maximizing yield potential. Recent advancements in SSNM integrate remote sensing technologies, GIS-based decision support tools, soil health diagnostics, and real-time crop monitoring to optimize nutrient input. These tools allow for dynamic nutrient planning, taking into account variations in soil fertility, crop growth stages, and climatic conditions. In cereals such as rice, wheat, and maize, SSNM has demonstrated significant improvements in productivity, nutrient use efficiency, and economic returns, while reducing greenhouse gas emissions and nutrient leaching. Furthermore, farmer-friendly digital platforms and mobile-based advisory services are facilitating widespread adoption of SSNM, particularly in smallholder systems across Asia and sub-Saharan Africa. As the global demand for cereals intensifies amidst climate change and resource constraints, SSNM represents a sustainable intensification pathway that aligns with agroecological principles and food security goals.