The extensive misuse of chemical fertilizers in contemporary agricultural practices has led to soil degradation and environmental pollution, necessitating the adoption of precision fertilizer management for sustainable agriculture and nutritional security. Nanofertilizers emerge as innovative solutions to revolutionize nutrient management, enhance crop yield, and promote environmental sustainability. By utilizing nano-sized materials for controlled and targeted nutrient release, nanofertilizers improve nutrient use efficiency, reduce fertilizer requirements, and minimize environmental pollution compared to traditional fertilizers. Traditional fertilizers often suffer from inefficiencies such as nutrient leaching and limited uptake by plants, leading to over-fertilization and suboptimal crop growth. In contrast, nanofertilizers offer controlled nutrient release, targeted delivery, and increased bioavailability, enhancing nutrient use efficiency and improving soil fertility. The unique properties of nanomaterials enable interactions with soil particles, influencing nutrient adsorption and surface interactions. Nanofertilizers encompass nanoparticles, nanocomposites, and nanocapsules, each offering unique advantages in nutrient delivery and controlled release. Experimental studies demonstrate the efficacy of nanofertilizers in various crops, enhancing phosphorus uptake, reducing nitrogen losses, and improving crop productivity. Furthermore, nanofertilizers contribute to sustainable water management by enhancing water retention and reducing water requirements through hydrogel incorporation and seed coatings. Integration of nanofertilizers with precision agriculture optimizes nutrient delivery, enhances soil structure, and improves crop quality, ensuring sustainable and resilient farming systems. Despite their promising benefits, challenges such as environmental and health concerns, high production costs, and regulatory standards need to be addressed for the responsible and sustainable deployment of nanofertilizers. Future research directions include improving fabrication processes, understanding uptake mechanisms, and addressing toxicity concerns to ensure the safe and effective implementation of nanofertilizers in agriculture. Overall, nanofertilizers offer a transformative potential to address global food security challenges while promoting environmental sustainability and efficient resource utilization in agriculture.