Chapter NANODIAMOND REINFORCED POLYMER NANOCOMPOSITE: PROSPECTIVE CORROSION PROTECTION MATERIALS Ayesha Kausar * School of Natural Sciences, National University of Sciences and Technology (NUST), Islamabad, Pakistan ABSTRACT Nanodiamond has become one of the most widely studied carbon nanomaterials owing to exceptional structural and physical properties. Nanodiamond reinforcement in polymers has opened several new doors for its potential applications. Consequently, nanodiamond has been introduced in polymers to harness its valuable corrosion protection properties. A number of synthetic and natural polymers have been investigated as corrosion inhibitors. Conjugated polymers, polyamides, epoxy resin, etc. have been employed as indispensable polymer matrices for corrosion inhibition applications. Corrosion protection of polymers has been found to enhance by nanodiamond amalgamation. One of the foremost challenges in the use of nanodiamond is to attain fine dispersion in polymer matrices. Nanodiamond particles have, thus, been incorporated in matrix through physical and covalent interactions. Incidentally, several techniques have been focused for manufacturing homogeneously dispersed polymer/nanodiamond nanocomposite. Briefly speaking, this chapter covers the potential prospects of nanodiamond, corrosion inhibiting polymers, and important categories of polymer/nanodiamond nanocomposite as corrosion protection materials. Future research on this exciting class of nanocomposite will definitely resolve the current challenges associated with the implication of polymer-based materials as corrosion inhibitors. * Corresponding Author E-mail: dr.ayeshakausar@yahoo.com.