**Abstract**

This chapter presents an overview of research efforts focused on both fabrication and properties of nanocomposites prepared by electrodeposition. The nanoparticles can im‐ prove the base material in terms of wear resistance, damping properties, and mechanical strength as well as electrical properties. Different kinds of matrix, such as metals, poly‐ mers, and ceramic matrix, have been employed for the production of composites rein‐ forced by nano-ceramic particles such as carbides, nitrides, and oxides as well as carbon nanotubes. Theoretical aspects and mechanisms related to the electrodeposition process of nanocomposite films, from aqueous solutions, are discussed.

**Keywords:** Nano-structured coatings, Electrocodeposition, Theoretical models, Charac‐ terization techniques, Applications
