Nanoparticles derived from biowaste have been widely investigated as one of the greener approaches to preparing pesticides. Advantages of this method include the use of environmentally friendly and earth-abundance resources, cost-effectiveness with low energy consumption, biocompatibility, as well as adjustability in various cases of biomolecules as medium or bio-reducing agents for pesticide production. Integrating biowastes in nanomaterials-based pesticide preparation marks the new age of innovation in the nanomaterial to overcome the contemporary problems in agriculture and mitigate environmental pollution. In this review, the synthesis of nanomaterials derived from biowastes as agrochemicals and their advantages are highlighted. The current review could serve as a guide for the industry and scientific communities who are interested in innovating or applying nanomaterials as agrochemicals in crop protection. It is anticipated that the next generation will mark the use of sustainable materials, in which nanomaterials-based pesticides derived from the biowastes has the potential to fulfill the sustainable development goals.