United Nations Department of Peace Operations

The Department of Peace Operations (DPO) (French: Département des opérations de maintien de la paix) is a department of the United Nations (UN) charged with the planning, preparation, management, and direction of UN peacekeeping operations. Previously known as the Department of Peacekeeping Operations (DPKO), it was created in 1992 as part of a restructuring of the UN's peace and security apparatus. The DPO retains the core functions and responsibilities of its predecessor, with a greater emphasis on cohesion, integrating different resources and knowledge, and promoting human rights.

With an annual budget of roughly $5.7 billion as of 2026, the DPO is the largest UN agency by expenditure, exceeding the UN's own regular budget. As of 31 May 2026, it oversaw 51,108 personnel serving in 11 peacekeeping missions.