MicroRNAsMicroRNA (miRNAs) are small, non-coding RNAs that are very important for controlling how genesGene in plants are expressed. They have an effect on many biological processes, such as growth and development and how plants react to stress in their environment. Their regulatory role is especially important when plants are under abiotic stressors like drought, salinity, and very high or low temperatures. AgrobacteriumAgrobacterium-mediated transformation, particle bombardment, and other traditional delivery methods have helped make miRNA-based treatments possible. But these methods often do not work very well, adversely affected the tissue, and the molecules that are delivered are not stable. Nanotechnology is a promising option. Lipid vesicles, chitosan polymers, gold particles, and carbonCarbon-based materials are a few examples of nanoparticles that work well as carriers for miRNAs. These nanocarriersNanocarriers keep miRNAs from breaking down, help cells take them in, and let them be delivered to specific tissues. They create new ways to control genesGene in plants with precision. This chapter examines the potential of nanoparticles as carriers for miRNAs in relation to abiotic stressAbiotic stress toleranceTolerance. It looks at the most recent research, discusses about how nanocarrierNanocarriers-based strategies can make plants more resilient, and shows how they have worked in model and crop species. This method combines molecular biology and nanotechnology to create a long-term way to improve crop performance in tough environmental conditions.