OSD Office of the Secretary of Defense

About this office

Full name

Office of the Secretary of Defense

Notes

Secretary and Deputy Secretary of Defense; policy and administrative offices

Placement confidence

Official organizational placement

Status

Current

People (8)

• Gen. James N. Mattis Documented
  Secretary of Defense, 2017–2018
  Leadership · Flowchart draft p.1
• Lt. Col. Mark Thomas Esper Documented
  Secretary of Defense, 2019–2020
  Leadership · Flowchart draft p.1
• Col. Christopher C. Miller Documented
  Acting Secretary of Defense, Nov 2020–Jan 2021
  Leadership · Flowchart draft p.1
• Maj. Pete Hegseth Documented
  Secretary of Defense / War, 2025–present
  Leadership · Flowchart draft p.1 · Secretary of War secondary title since Sept 2025
• Patrick M. Shanahan Documented
  Deputy Secretary of Defense, 2017–2019
  Leadership · Flowchart draft p.1 · Not yet in People Registry
• David L. Norquist Documented
  Deputy Secretary of Defense, 2019–2021
  Leadership · Flowchart draft p.1 · Not yet in People Registry
• Kathleen H. Hicks Documented
  Deputy Secretary of Defense, 2021–2025
  Leadership · Flowchart draft p.1 · Not yet in People Registry
• Stephen A. Feinberg Documented
  Deputy Secretary of Defense, 2025–present
  Leadership · Flowchart draft p.1 · Not yet in People Registry