The Fleet Marine Force, Atlantic (FMFLANT) is an American maritime landing force that is spread across the Atlantic Ocean. It is headquartered at Naval Station Norfolk and directs and commands all the subordinate elements of the Navy Expeditionary Strike Force and Marine Air-Ground Task Force components that follow under the 2nd, 4th, and 6th Fleet and the Marine Forces Command (MarForCom). The Commanding General of Marine Forces Command is dual-posted as the Commanding General of the Fleet Marine Force, Atlantic. FMFLANT is under operational control of the Commander-in-Chief, United States Fleet Forces Command, when deployed.

The Commander, U.S. Marine Corps Forces Command (COMMARFORCOM), headquartered at the Naval Support Activity Hampton Roads in Norfolk, Virginia, commands service retained-operating forces; executes force sourcing and synchronization to affect force generation actions in the provisioning of joint capable Marine Corps forces, and directs deployment planning and execution of service retained-operating forces in support of Combatant Commander (CCDR) and service requirements; serves as Commanding General, Fleet Marine Force, Atlantic and commands embarked Marine Corps forces; coordinates Marine Corps-Navy integration of operational initiatives and advises CDR U.S. Fleet Forces Command (USFF) on support to Marine Corps forces assigned to naval ships, bases, and installations; conducts Service directed operational tasks as required. COMMARFORCOM is also the Commander, Marine Corps Forces Northern Command (MARFORNORTH), the Marine service component command of U.S. Northern Command.