The Provost Marshal is the officer in the armed forces who is in charge of the military police (often called the provost). He may serve at many levels and may also be the public safety officer of a military installation, responsible for the provision of fire and ambulance services as well as law enforcement.

In the British Armed Forces, the Provost (pronounced prov-oh) Marshal is the head of the military police of each service, with the senior military police officers at lower levels being titled Deputy or Assistant Provost Marshals.