The integration of nanotechnology into plant tissue culture media presents a transformative approach to improving crop growth and development. Nanoparticles (NPs), due to their high surface area-to-volume ratio and unique physicochemical properties, can significantly influence nutrient availability, hormonal activity, and stress tolerance in vitro. When judiciously incorporated into culture media, nanomaterials such as silver (AgNPs), zinc oxide (ZnO NPs), and silica nanoparticles can enhance cell proliferation, organogenesis, and somatic embryogenesis by modulating physiological and biochemical pathways at the cellular level. These effects are largely attributed to improved nutrient uptake, reactive oxygen species (ROS) scavenging, and enhanced expression of growth-related genes. Moreover, nanomaterials offer controlled delivery of phytohormones and antimicrobial agents, minimizing contamination risks and improving regeneration efficiency. Despite promising outcomes, challenges remain in optimizing nanoparticle concentration, avoiding phytotoxicity, and ensuring environmental safety. Continued research is essential to establish standardized protocols and elucidate the molecular mechanisms underlying nanoparticle–plant interactions. Overall, nanotechnology presents a novel and potent strategy to augment plant tissue culture practices, contributing to sustainable agriculture and food security in the face of growing global demands.