I am glad to present the book entitled, A Textbook of Strength of Materials to the engineering students of mechanical, civil, electrical, aeronautical and chemical and also to the students of A.M.I.E. Examination of Institution of Engineers (India). The course-contents have been planned in such a way that the general requirements of all engineering students are fulfilled. This book is written in a simple and easy-to-follow language, so that even an average students can grasp the subject by self-study. At the end of each chapter, highlights, theoretical questions and many unsolved numerical problems with answers are given for the students to solve them.