Pax Christi USA strives to create a world that reflects the Peace of Christ by exploring, articulating, and witnessing to the call of Christian nonviolence. This work begins in personal life and extends to communities of reflection and action to transform structures of society. Pax Christi USA rejects war, preparations for war, and every form of violence and domination. It advocates primacy of conscience, economic and social justice, and respect for creation.

Pax Christi USA commits itself to peace education and, with the help of its bishop members, promotes the gospel imperative of peacemaking as a priority in the Catholic Church in the United States. Through the efforts of all its members and in cooperation with other groups, Pax Christi USA works toward a more peaceful, just, and sustainable world.

Pax Christi is a section of Pax Christi International, the Catholic peace movement.