The present work is a humble attempt to present Tibetan Buddhism in a holistic way. Although it is a broad topic and very difficult to contain in a single book but the author has tried his best to cover all the important aspects. The book deals with the Pre Buddhist religious scenario of Tibet, Introduction of Buddhism, various sects of Tibetan Buddhism, Iconographical study of Tibetan Buddhist deities, Tibetan architecture, and language and literature. It also throws light on the Siddha tradition along with various aspects of Tibetan culture like the scroll painting, medicine, mandala, religious dance, customs, drama etc. Discussion were also made on the fusion of Tibetan Buddhism in the Himalayan tracts of India and also on the other Asian Countries. How and when the western world was influenced with Tibetan Buddhism is also highlighted. A brief history of Emperor Srong-btsan-sgampo, founder of the Tibetan Empire and Padmasambhava known as the second Buddha of Tibet is described in the appendix. While discussing on aforesaid subjects literary as well as archaeological evidences were used supported with maps and illustrations. Hope the book will be useful for the people who are curious to know about Tibetan Buddhism.