Department of Defence or Department of Defense may refer to:

Current departments of defence

* Department of Defence (Australia) * Department of National Defence (Canada) *

Department of Defence (Ireland) The Department of Defence ( ga, An Roinn Cosanta) is the department of the Government of Ireland that is responsible for preserving peace and security in Ireland. The department is led by the Minister for Defence. Departmental team The offic ...

Department of National Defense (Philippines) The Department of National Defense (DND; fil, Kagawaran ng Tanggulang Pambansa, ''KTP'') is the executive department of the Philippine government responsible for guarding against external and internal threats to peace and security in the co ...

Department of Defence (South Africa) The Department of Defence is a department of the South African government. It oversees the South African National Defence Force, the armed forces responsible for defending South Africa. the Minister of Defence and Military Veterans is Thandi M ...

Federal Department of Defence, Civil Protection and Sport The Federal Department of Defence, Civil Protection and Sport (DDPS, german: Eidgenössisches Departement für Verteidigung, Bevölkerungsschutz und Sport, french: Département fédéral de la défense, de la protection de la population et des ...

(Switzerland) *

Department of Defense (United States) The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national sec ...

Historical

* Department of Defence (1901–21) (Australia) * Department of Defence (1921–39) (Australia) * Department of Defence Co-ordination (Australia, 1939–1942) * Department of Defence Production (Australia, 1951–1958) * Department of Defence Support (Australia, 1982–1984)

Current departments of defence

Historical

See also