The Fleet Marine Force (FMF) Enlisted Warfare Specialist insignia is a qualification insignia of the United States Navy earned by Navy enlisted members assigned to the Fleet Marine Force of the U.S. Marine Corps who have successfully completed the necessary requirements.

To be designated an Enlisted FMF Warfare Specialist, a service member must serve a minimum of 12 months as a member of the Fleet Marine Force and must participate in designated forward field operations. Core and platform specific Personal Qualification Standards as well as an oral examination must be completed before the FMF Enlisted Warfare Specialist insignia is presented. Although this is a qualification for Navy enlisted personnel, it is unique in that only Commanding Generals or Commanding Officers of qualifying U.S. Marine Corps commands can approve awarding of the designation.

Navy enlisted personnel permanently assigned to qualifying U.S. Marine Corps commands are required to complete this qualification with 18 months of reporting in. Hospital corpsmen (HMs) are the most common recipients of this insignia; enlisted personnel who have received it may place the designation in their professional titles, e.g., Hospital Corpsman First Class (Fleet Marine Force), or HM1(FMF).

Navy personnel may also be awarded the Fleet Marine Force Ribbon, which may be worn simultaneously with the FMF Enlisted Warfare Specialist insignia.

See also: Military badges of the United States