Interest in pacifism—an idea with a long history in philosophical thought and in several religious traditions—is growing. is the first comprehensive reference designed to introduce newcomers and researchers to the many varieties of pacifism and nonviolence, to their history and philosophy, and to pacifism’s most serious critiques. The volume offers 32 brand new chapters from the world’s leading experts across a diverse range of fields, who together provide a broad discussion of pacifism and nonviolence in connection with virtue ethics, capital punishment, animal ethics, ecology, queer theory, and feminism, among other areas. This is divided into four sections: (1) Historical and Tradition-Specific Considerations, (2) Conceptual and Moral Considerations, (3) Social and Political Considerations, and (4) Applications. It concludes with an Afterword by James Lawson, one of the icons of the nonviolent American Civil Rights movement. The text will be invaluable to scholars and students, as well as to activists and general readers interested in peace, nonviolence, and critical perspectives on war and violence.