The STARFLEET Marines have a different ranking system from STARFLEET. The ranking system used in the SFMC is analogous to the ranks used in the US Army and USMC.

Non-Commisioned Officers (i.e. Enlisted)

• Rank Code	Rank	Rank insignia
  E-1	Private (PVT)
  E-2	Private (PFC)
  E-3	Lance Corporal (LCPL)
  E-4	Corporal (CPL)
  E-5	Sergeant (SGT)
  E-6	Staff Sergeant (SSGT)
  E-7	Gunnery Sergeant (GSGT)
  E-8	First Sergeant (1SGT) / Master Sergeant (MSGT)
  E-9	Sergeant Major (SGM) / Master Gunnery Sergeant (MGSGT)
  E-9 special	Sergeant Major of the STARFLEET Marine Corps (SGM/SFMC)

Warrant Officers

• Rank Code	Rank	Rank insignia
  W-1	Warrant Officer
  W-2	Chief Warrant Officer 2
  W-3	Chief Warrant Officer 3
  W-4	Chief Warrant Officer 4
  W-5	Chief Warrant Officer 5

Commissioned Officers

• Rank Code	Rank	Rank insignia
  O-1	2nd Lieutenant (2LT)
  O-2	1st Lieutenant (1LT)
  O-3	Marine Captain (CPT)
  O-4	Major (MAJ)
  O-5	Lieutenant Colonel (LTC)
  O-6	Colonel (COL)
  O-7	Brigadier (BDR)
  O-8	Brigadier General (BGN)
  O-9	Major General (MGN)
  O-10	Lieutenant General (LGN)
  O-11	General (GEN)
  O-12	General (GEN) (Fleet Admiral) (Only for current and past CS) (There used to be a five-star insignia for this rank)