This book explores and highlights the geothermal fields of India. Until recently geothermal energy has little significance in India, therefore this book will help to provide an understanding of the potentials of Indian geothermal fields. This book will offer guidance on how to estimate the significance and resource potential of this geothermal region. The book aims to unfold the four tectonically divided geothermal regions of India namely, NW-SE Himalayan arc system with continuation to Andaman Nicobar Island, Son-Narmada-Tapti Lineament, West Coast Continental Margin and Gondwana Grabens along with Delhi Folding’s. The techniques for several direct to indirect applications of geothermal energy are described; such as power generation, desalination, honey processing, milk pasteurization, space heating and cooling, etc. This book covers the uses of geothermal water for industrial, domestic, and agricultural use. These applications increase the rate of employment in the rural and remote locations, in turn providing further societal benefits.The book also discusses the several base metal and rare earth element extractions using geothermal water, for example; lithium, zinc, manganese, and helium. This is an open access book.