Nano urea, a product of cutting-edge nanotechnology, represents a paradigm shift in agricultural practices. This article aims to provide a comprehensive overview of its attributes, benefits, challenges, and potential contributions to a more food-secure and environmentally conscious world. We will explore the composition, mechanisms, and the potential it holds for sustainable and eco-friendly agriculture. In particular, we will examine the various application methods and the benefits they bring to different crop systems. This paper will also discuss the regulatory aspects of nano-urea and its economic viability for farmers. In most of the crops, the effect of nano urea is under intensive research stage. In rabi maize, using nano urea along with the recommended dose of fertilizer has shown superior results. 75% of RDN + Two foliar sprays of nano urea (AT and PI) have shown higher yields and harvest index in rice. In black wheat, 50% Conventional urea + 50% of Nano urea fertilizer has shown superior results when compared to the RDN. In finger millet, RDN + 2 sprays of nano urea has shown higher economic yields. In sunflower, the nano urea treatments did not show any significantly superior yield and yield attributes when compared to the treatment with RDN. However, pearl millet, rice, maize and most of the crops 50% RDN + 2 sprays of nano urea was also on par with the treatment with RDN. So the agricultural community can be advised to use technologies like nano-urea, which could improve production without reducing crop yield.