The students and youth of the present generation are not having adequate opportunities to know about Upanishads, the ultimate sources of eternal and universal knowledge. While the scientists and statesmen of outstanding caliber through out the globe view the preachings of Upanishads with high reverence, the people in India are having no knowledge, or very limited knowledge related to the above subject. The book on “A brief introduction to Upanishads” is an attempt to provide comprehensive information about 11Upanishads and their contents, in a question answer format. The subjects touched upon belong to Isavasya, Kena, Katha, Mundaka, Mandukya, Prasna, Taittiriya, Chandogya, Aitereya, Brihadaranyaka and Swetaswatara Upanishads.