Key Officials with Offices at the Pentagon

The Pentagon houses the top leadership of the U.S. Department of Defense. Principal officeholders include:

• Secretary of Defense
• Deputy Secretary of Defense
• Under Secretaries (Policy; Acquisition & Sustainment; Personnel & Readiness; Comptroller; Research & Engineering)
• Chairman & Vice Chairman of the Joint Chiefs of Staff
• Service Chiefs (Army, Navy, Air Force, Marine Corps, Space Force)
• Combatant Commanders (Cyber Command, Special Operations Command)
• Agency Directors (DIA, NGA, NRO, DTRA)

These leaders coordinate national defense strategy, operations, and resources from the world's largest office building.