Nanoparticles are becoming more popular as a result of their exceptional size-to-volume ratio, which enables them to perform a wide range of chemical reactions with a high degree of efficiency. The applications of such particles are quickly expanding in various sectors. However, traditional methods of synthesizing nanoparticles often involve the use of very toxic chemicals. Although these toxic chemicals may produce the useful target nanoparticles, the production of hazardous byproducts is inevitable. Thus, green synthesis has attracted great attention in the nanoscience area. Green synthesis processes always exclude toxic materials in synthesis procedures and use supplementary materials that are natural or less harmful. This study focuses on the synthesis of these materials without the use of toxic chemicals, and the production of nanoparticles from natural resources such as peel, leaf, petal of flowers, fruit, root, and so on. On one hand, these starting materials are cheap and safe; on the other hand, using these materials may reduce the impact of waste on the environment, as some of these materials tend to build waste. This study also focuses on the applications of such nanoparticles in a variety of industries. A few examples of these industries include the agriculture industry, the food industry, and the pharmaceutical sector.