Rising scientifically, the topic of green technology has attracted a lot of attention recently because of its numerous applications. It is a multidisciplinary field that is safe, non-hazardous and ecologically friendly in contrast to the chemical and physical processes used for producing nanoparticles. Variations in the biomaterials employed during the synthesis process will result in differing nanoparticle sizes, forms and biological functions. It is reported that agroforestry plants contain various phytochemicals, viz. carotenoids, vitamins, minerals, amino acids, sterols, glycosides, alkaloids, flavonoids and phenolics, they play roles as reducing as well as stabilizing agents during the synthesis of nanoparticles. This chapter provides an overview of the most recent research on distinct green synthesis techniques that rely on diverse agroforestry plant components, agro-waste & agricultural biomass for the development of nanoparticles. By minimizing the need for dangerous chemicals and promoting “biosynthesis,” the use of these materials lowers the cost of synthesis.