Bioinspired Nanoparticles (BNPs) offer an innovative approach to plant genetic engineering by harnessing biological systems to create stable, biocompatible, and efficient gene delivery methods. Conventional gene delivery techniques, agrobacterium-mediated transformation and gene guns are tissue-specific, have off-target effects and have low efficacy. Whereas, BNPs allow the targeted delivery of genetic material such as RNA, DNA, and components of CRISPR-Cas, thereby improving genome editing precision. These nanoparticles (NPs) allow gene editing, particularly using CRISPR-Cas constructs and RNA methods, achieving a higher success rate with minimal cellular damage. BNPs significantly contribute to enhancing plants’ disease resistance and abiotic stress tolerance, making them ideal candidates for improvements in many crop plants. Besides genetic engineering, BNPs also exhibit potential roles in biocontrol applications, especially against fungal, bacterial, and viral pathogens through targeted microbial delivery. Despite the promising potential, there are challenges such as assessing the long-term impacts of BNPs on the environment, optimizing BNPs for large-scale agricultural applications, and developing a standardized framework. This chapter explores the synthesis, applications, emerging trends, and challenges associated with BNPs to get new insights into their potential for crop improvement and sustainable agriculture.