NATO Office of Security (NOS)

security agreement (information security, NATO)

Office of NATO Standardization

Office of NATO Terminology Coordination

Office of Homeland Security (OHS)

Air Force Special Security Office

Emergency Reaction Air Force Special Security Office

special security office (SSO)

tactical special security office

security office

delegation (of NATO member state at NATO HQ)

7.62×51mm NATO (official nomenclature 7.62 NATO)

defense and Security Directorate (NATO)

Environment and Security Initiative (ENVSEC) UN-OSCE-NATO initiative

NATO fundamental security tasks

NATO Security Committee (NSC)

NATO Security Principles for the Storage of Military Ammunition and Explosives

NATO Security Assistance and Training for Ukraine (NSATU)

administrative district office

army post office

CIA Office of Military Affairs (OMA)

commandant’s office

Defense Prisoner of War/Missing Personnel Office (DPMO)

Home Office

liaison office

National Reconnaissance Office (NRO)

office of civil and defense mobilization

Office of Naval Intelligence (ONI)

office of naval research

Office of the Assistant Chief of Staff for Installation Management (OACSIM)

office of the chief of special warfare

Office of the Secretary of Defense (OSD)

Office of the Secretary of the Navy