The food, energy, and water nexus illustrates the interconnectedness and interdependencies among these vital resources. Food production requires water and energy inputs, while energy generation often relies on water resources for cooling and sometimes food crops for biofuel. Water availability is essential for both food production and energy generation processes. This nexus emphasizes the need for integrated policies and sustainable practices to ensure the security and efficiency of these resources. Managing one aspect without considering the others can lead to inefficiencies and potential conflicts. Therefore, a holistic approach is crucial, aiming for sustainable solutions that optimize resource use, minimize environmental impacts, and enhance resilience to global challenges like climate change and population growth. By understanding and addressing these interlinkages, societies can strive towards a more secure and sustainable future for food, energy, and water resources globally. This book outlines the recent advances on food, energy, and water nexus in detail. It discusses the fundamentals as well as modern approaches of this field. This book will prove to be immensely beneficial to students and researchers in this discipline.