Abstract: Nanotechnology, the science that investigates matter on an almost atomic scale, is already part of our lives, it is applied to many technological components, smart fabrics, stronger, lighter, and more durable materials, food, creams, etc. Nanotechnology applied to medicine is known as nanomedicine. This science studies new diagnostic, therapeutic, or treatment systems based on nanoscale components that offer a new approach to treating disease, at the cellular, subcellular and molecular levels. Nanomedicine raises high expectations. Among its advantages is its enormous potential to achieve greater efficiency in disease diagnosis systems, with greater speed and new targeted treatments; a new way of developing vaccines, and the potential of delivering promising solutions to many illnesses for better, more efficient, and affordable healthcare. From diagnosis to disease monitoring, going through surgery and chemotherapy, or regenerative medicine, nanotechnologies virtually impact all fields of current medicine. Currently, there are hundreds of nanomedical products under clinical trials, covering all major diseases including cardiovascular, neurodegenerative, musculoskeletal, and inflammatory. Enabling technologies in all healthcare areas, Nanomedicine is already accounting for approximately 80 marketed products, ranging from nano-delivery and pharmaceutical to medical imaging, diagnostics, and biomaterials. Recently, a wide range of potential applications of nanotechnology has been envisaged also in veterinary medicine and agriculture. In the veterinary sector, they increasingly invade animal therapeutics, diagnostics, the production of veterinary vaccines, farm disinfectants, for animal breeding and reproduction, and even the field of animal nutrition. Many reports have shown evidence that nanoparticles may be good candidates for animal growth promotion and antimicrobials merging roles of nanoparticles for nutrient delivery. Their replacement of commonly used antibiotics directly reflects on public health. By so doing, they minimize the problem of drug resistance in both human and veterinary medicine, and the problem of drug residues in milk and meat. Finally, in agriculture, nanomaterials are used to increase productivity as nanopesticides and nanofertilizers, improve the quality of the soil eg., using nanozeolites and hydrogels, stimulate plant growth using nanomaterials (SiO2, TiO2, and carbon nanotubes) or as smart nanosensors to monitor the environment. In short, nanotechnology is already part of our lives, let?s see how we can get the most out of its use.