**Abstract**

Nanocomposites are versatile materials because of possessing superior properties as compared to their parent materials. Due to their improved electrical, mechanical, thermomechanical, electronic, optoelectronic, thermal, and magnetic properties, these materials are receiving much attention from researchers all over the world. In every field, the focus of the research is to develop such materials which have low weight, superior strength, and enhanced performance as well as cost competitiveness in comparison to existing materials. The nanocomposite materials have been used in the fields of avionics, biomedical, auto industry, sports industry, oil/gas, construction, food industry, agriculture industry, and information technology. This chapter addresses the synthesis, unique properties, and diverse applications of nanocomposites in different fields.

**Keywords:** nanocomposites, synthesis, properties, applications, ceramic, metal, polymer
