The right to peace is an evolving concept in international law that envisions peace not simply as the absence of war but as a condition rooted in justice, equality, and human dignity. It has developed through philosophical, political, and legal traditions that link peace to human rights, sustainable development, and global cooperation. Although not yet a binding legal right, it has gained prominence through United Nations declarations and advocacy by civil society. This entry explores the philosophical foundations of the right to peace, its recognition in soft law instruments, and the challenges posed by structural violence, inequality, and state sovereignty. It concludes that realizing this right requires collective commitment to education, disarmament, and inclusive governance as the foundations of sustainable peace.