Nanomedicine is the medical application of nanotechnology. Nanomedicine ranges from the medical applications of nanomaterials, including nanoparticles, to nano electronic biosensors, and even possible future applications of molecular nanotechnology such as biological machines. The size of nanomedicine particles is like that of most biological molecules and structures, such as EVs and viruses; therefore, nanomedicine particles can be useful for both in vivo and in vitro biomedical research and applications. Thus far, the integration of nanomaterials with biology has led to the development of diagnostic devices, contrast agents, analytical tools, physical therapy applications, and drug delivery vehicles. Nanomedicine seeks to deliver a valuable set of research tools and clinically useful devices in the near future.