The utilization of foliar nanofertilizers in vegetable crop enhancement has garnered significant attention in recent agricultural research. This review delves into the significant role of foliar nanofertilizers in augmenting the productivity and resilience of vegetable crops. Beginning with the introduction of this concept, it elucidates the vital need for nanofertilizers in modern agriculture. This paper outlines the numerous advantages of nanofertilizers over conventional fertilizers, emphasizing their potential to revolutionize agricultural practices. It discusses various modes of nanofertilizer application, with a particular focus on their efficacy as foliar sprays. Furthermore, this review examines the intricate mechanisms underlying the foliar application of nanofertilizers, elucidating how these nanomaterials interact with plant physiology to enhance nutrient uptake and utilization. By analyzing empirical studies, it evaluates the effects of foliar nanofertilizers on vegetable growth and yield highlights their efficacy in optimizing crop performance. Additionally, this review highlights the application of foliar nanofertilizers in mitigating abiotic and biotic stresses in vegetable crops and their role in improving resilience to adverse environmental conditions and pest infestations. It also addresses the challenges and limitations associated with the broader adoption of nanofertilizers, including regulatory concerns and potential environmental impacts. Finally, this article provides insights into the prospects and research directions in the field of foliar nanofertilizers, underscoring the importance of continued innovation to harness their potential for sustainable agriculture.