Nanotechnology is revolutionizing cardiovascular care through advancements in drug delivery, stent development, disease detection, and regenerative medicine. Nanoparticles enable targeted drug therapies for conditions like atherosclerosis, enhancing treatment while minimizing side effects. Nanotechnology also improves vascular stents by reducing complications and improving integration with tissues. Nanoscale biosensors are enabling early detection of cardiovascular diseases, allowing for timely interventions. In regenerative medicine, nanotechnology supports the creation of biomaterials for cardiac tissue engineering, promoting the regeneration of damaged heart tissue. These innovations are transforming cardiovascular diagnostics and therapy, offering improved outcomes for patients with heart disease.