This book focuses on the Prospectivity Review of Kenya's Petroleum and Geothermal Resources, offering a synoptic overview of geological implications, tectonic features, and subsurface stratigraphical studies within the Great East African Rift System (EARS). Recently, significant petroleum leads/plays and geothermal manifestations have been discovered in the Tertiary Rifts of Kenya. Tectonism resulted from continental rifting during the Late Paleozoic, continuing through the Mesozoic and Tertiary periods. This movement led to a remarkable outpouring of lava flows within various horst- and graben-like structural systems, induced by extensional rifting forces, block faulting, and subsidence, creating favorable zones for petroleum and geothermal exploration. The comprehensive overview of applied geology underscores the essential skills required for geoscientists to unlock the potential of these vital energy resources within Kenya's EARS.