This book is intended as an introduction to balanced cordial and graceful cordial labeling and its applications. My aim has been to present what I consider to be the basic material, together with a wide variety of applications. The application have been carefully selected and are treated in some dept. In some chapter new definitions are introduced. The reader may find it helpful to check his understanding by referring examples. I first want to take the opportunity to acknowledge my esteemed guide Dr V. J. Kaneria whose knowledge, wisdom and commitment has provided inspiration and motivation to realize my dream. I personally thankful to the authors of the research articles and books which I have referred during the preparation of my book. Last but not least, I thank my parents, Mr. Ratibhai V. Teraiya my father and late Mrs. Minaxiben R. Teraiya my mother without whose sacrifices and constant support the journey could not have been possible. I thank them from the bottom of my heart, finally I would like to thank my better half Mrs. Dhara J. Teraiya for her constant support and also my little rockstar Master Hetansh for his love.