Interfaith initiatives respond to the violence and uneasy tensions of our times and interfaith efforts aim to confront the root causes, especially those that touch on religious beliefs and practices. Interfaith work looks to identify solutions in common values and goals that can help cross deep social and political divides, binding people together. This project set out to understand the many initiatives that involve interfaith dialogue and action and to appreciate their impact and the challenges they face. The task is complicated by the remarkable diversity of initiatives and the fact that they are multiplying rapidly. This report is an introduction to a complex field and a stock-taking. It offers a map of the history, intellectual foundations, and major features and actors involved in interfaith work.