A nanometer is a unit of measurement equal to one-billionth of a meter. The range of measurements from 1 to 100 nanometers is commonly referred to as the ‘nanoscale.’ Nanotechnology has shown remarkable potential across various fields like medicine, pharmaceuticals, energy, materials science, and plant science, leading to its increased popularity. With the escalating global demand for food, the widespread use of chemical fertilizers has resulted in detrimental effects on soil, the environment, and human health. As an effective alternative, nanofertilizers have emerged, comprising carefully regulated nanoparticles delivering macro- and micronutrients to the plant rhizosphere. These synthetic substances incorporate essential nutrients like nitrogen, phosphorus, potassium, iron, and manganese, either individually or combined with nano-sized adsorbents. Due to their capability to enhance nutrient uptake efficiency, nanofertilizers offer superior nutritional management. Current agricultural practices, primarily established during the green revolution, have become unsustainable, especially given population growth and the impacts of climate change. To ensure food security, sustainable agriculture offers a more resilient, efficient, and enduring system. Nanotechnology will significantly contribute to advancing this transition. In order to improve crop nutrient efficiency, we’ve compiled a list of promising opportunities and methodologies for applying nanotechnology. Adopting a systems approach is crucial in designing potential nanotechnologies, considering possible obstacles in their development and implementation.