The book “Fundamentals of Human Ethics, Law, and Global Governance” aims to help readers understand the basic ethical and legal systems that support today’s global governance. The book has eight chapters. Each chapter examines important parts of ethics, law, and international governance. It begins with the basic ideas of ethics, including deontology, utilitarianism, and virtue ethics. It presents ideas about moral philosophy, human values, and making ethical choices worldwide. The book provides a detailed look at how legal systems have changed, comparing common and civil law traditions. It also examines the impact of religion and constitutional law on today’s government. The importance of international law in stabilizing global relations is closely examined, along with talks about treaties, conventions, and ways to enforce them that influence global justice systems. The following chapters discuss the moral and legal challenges in diplomacy, global relations, and environmental management. It provides information about the legal issues of new technologies like artificial intelligence and biotechnology, focussing on how these affect privacy, security, and global rules. The book discusses worldwide economic and trade laws, summarizing organizations such as the World Trade Organization and the moral issues related to big companies operating in multiple countries. This book is important for anyone who wants to understand how ethics, law, and governance are connected in today’s complicated and global world.