Economic History of Thought book evaluates the through of significant economists both in terms of the subject of their day and in comparative to contemporary economic thought, The book is concerned primarily with the basic components of economic thought, namely, Ancient, Medieval, Modern economic thought, Classical Economic Thought of india, Medieval period in India, Nineteenth and Twentieth Century in india, post Marshallan and post Keynesian development Indian thought Mercantilism, physiocrats, Neo- Classicism and Gandhian economics shows that, while each of these societies is entrenched in a divers ephase of economic development, they can all deliver under standing in to the periodic problems of present economics. Contributions of specific philosophers like Adam Smith, Thoms Malthus, David Ricardo, J.S.Mill, Marx Alfred Marshall, Keynes, Knut, Wicksell, J.B. Clark, Irving, Taussing, Veblen W.C. Mitchell, R.C. Dutt, Naoroji, M.G.Randade, M.K. Gandhi ji . Dr B.R. AMBEDKAR, Rajaji, Jawahar Lal Nehru V.K.R.V. Rao, C.N. Vakil, D.R. Gadgil, Indra Gandhi, Amarthya Kumarsen and many other have been deliberated in component. This book offers fundamental out line to the history of economic thought and highly comprehensible . It has been organized in to 68 chapters. However, this book is also useful for B.A., B.Com, B.B.A., M.A. M.B.A. and M.Com. Degree courses of other Indian Universities. In addition, it will also be beneficial to candidates appearing for various competitive examinations such as I.A.S., I.E.S. C.A. and N.E.T. examinations. At the end of this textbook, necessary question bank are included for the convenience of the students. I hope that every reader will enjoy reading this book. Any recommendation to further improve its matters is most welcome.