: Nanotechnology has a great influence on modern technology. Future applications will focus on shelf life, food quality, safety, fortification and biosensors for contaminated or spoiled food, irrigating water and drinking water. Among the various nanotechnologies, nano-analysis is most commonly seen in forensic science with instrumentations including transmission electron microscope (TEM), scanning electron microscope (SEM), atomic force microscope (AFM) and Raman micro spectroscopy (Micro-Raman). Due to their small size and unique physicochemical characteristics, nanomaterials have gained importance in the agri-food sector, notably in preservation and packaging. Novel nanocarriers like liposomes, niosomes, nanoemulsions, microemulsion, solid lipid nanoparticles, nanostructured lipid carrier, and nanospheres have replaced the usage of conventional delivery system. These novel nanocarriers have advantages of enhanced skin penetration, controlled and sustained drug release, higher stability, site specific targeting, and high entrapment efficiency. Nanotechnology is applicable in various fields of dental sciences such as orthodontic, Nano-sized materials have been applied in various fields of dentistry. Nanotechnology can be employed in orthodontics to enhance the quality of treatment. This review presents resent aspects of “Nanotechnology” in different areas of science. It gives a brief description about Nanotechnology and its application in various fields’ viz. wastewater treatment, Forensic, agriculture, Applications of Nanotechnology in Cosmeceuticals, in Orthodontics and in oil & gas recovery will be discussed.