Graph theory is rapidly moving into the main stream of research because of its applications in diverse fields such as biochemistry (genomics), coding theory, communication networks and their security etc. In particular researchers are exploring the concepts of graph theory that can be used in different areas of Cryptography. In this paper a review of the works carried out in the field of Cryptography which use the concepts of Graph Theory, is given. Some of the Cryptographic Algorithms based on general graph theory concepts, Extremal Graph Theory and Expander Graphs are analyzed.