Iron Nanoparticle is the product of iron material. Iron nanoparticles have magnetic properties. Iron Nanoparticles can be gotten from Iron as well as iron oxide. The most favorite use of iron Nanoparticles is to clean the contaminated ground from petroleum oil. In the process of in situ treatment, the use of iron Nanoparticles is essential. The use of iron Nanoparticles in the laboratory and particularly medical is known to all of us. Iron Nanoparticle is of utmost importance in the preparation of different alloy and catalyst applications. The use of iron particles as iron nanoparticles in the process of making of nano-fibers, nano-wires, and coatings is second to none. Organochlorine pesticides can be easily cleaned with the help of these particles, both of the iron and iron oxide. Also, Nanoparticles are used in the process of making memory tape.