The book follows a unified approach to present the basic principles of rocket propulsion in a concise and lucid form. This textbook comprises ten chapters ranging from a brief introduction and elements of rocket propulsion, aerothermodynamics to solid, liquid, and hybrid propellant rocket engines with a chapter on electrical propulsion. Worked-out examples are also provided at the end of the chapter for understanding uncertainty analysis. This book is designed and developed as an introductory text on the fundamental aspects of rocket propulsion for both undergraduate and graduate students. It is also aimed towards practicing engineers in the field of space engineering. This comprehensive guide also provides adequate problems for the audience to understand intricate aspects of rocket propulsion enabling them to design and develop rocket engines for peaceful purposes.