Postharvest technologies are a collection of scientific methods and techniques applied to agricultural produce after harvesting. The goal is to use, package, store, distribute, market, maintain quality, and preserve the produce to fulfill consumer needs for nutrition and food. Products from agriculture, including fruits and vegetables, are particularly perishable. As temperature increases, both respiratory and transpiration rates increase, causing the product to dry, wilt, and spoil unless preserved properly. Nanotechnology has great potential for creating advanced nanomaterials that can be used in a variety of disciplines. Research in nanotechnology use for postharvest management of fruits, crops, and floriculture has great potential for the agricultural sector. Research in nanotechnology use for postharvest management of fruits, crops, and floriculture has great potential for the agricultural sector. Reducing postharvest infections in fruits and vegetables is one of the technology’s main advantages, both in terms of science and business. Additionally, packaging plays a crucial role in ensuring an advantage in agriculture, so it is continually being examined and modified. The benefits of nanotechnology for postharvest management are numerous and far-reaching. For instance, the use of nanoencapsulation techniques can protect crops from environmental stressors, such as temperature fluctuations and microbial attacks. Correspondingly fruit and vegetable ripening can be regulated and water loss can be minimized by using nanocoating, which creates a physical barrier. Farmers and agricultural businesses may enhance revenue and minimize waste while simultaneously improving the quality and safety of their products by utilizing the possibilities of nanotechnology. This chapter establishes by offering a brief overview regarding the usage of nano-materials in postharvesting management in agriculture. Optimizing nanoparticles in agriculture will also enhance nutritional values and extend shelf life, maintaining food safety and purity. Analyzing nanoparticle migration and interaction with the polymer matrix during the construction of packaging materials is crucial, as their large surface area-to-volume ratio often contributes to their toxicity. Therefore, when using nanoparticles in edible packaging polymers that come into direct contact with food, it is imperative to investigate their migration, toxicity, and permissible limits. That being said, emerging trends in food consumption suggest that nanotechnology will lead and dominate the agricultural sector.