List of United States Marine Corps MOS

The United States Marine Corps Military Occupational Specialty (MOS) is a system of categorizing career fields. All enlisted and officer Marines are assigned a four digit code denoting their primary occupational field and specialty.

Contents

• Three Categories of MOSs
• Primary MOSs are of three types
• Non PMOSs are of three types
• Reporting MOSs Billet MOSs and Billet Designators
• Relationship of MOS to Promotions
• 27 Linguist
• 57 Chemical Biological Radiological and Nuclear CBRN Defense
• 606162 Aircraft Maintenance
• 6364 Avionics
• References

Occupational Fields (OccFlds) are identified in the first two digits and represents a grouping of related MOSs. Job codes are identified in the last two digits and represent a specific job within that OccFld.

The USMC now publishes an annual NAVMC-type directive in the 1200 SSIC series to capture changes to the MOS system. Previous versions of MCO 1200.17_ series directives are cancelled, including MCO 1200.17E, the last in the series before beginning the annual NAVMC-type directive series.

On 30 June 2016, the Marine Corps announced the renaming of 19 MOSs with gender-neutral job titles, replacing the word or wordpart "man" with the word "Marine" in most. Importantly, not all instances of the word or wordpart "man" were removed (e.g., 0171 Manpower Information Systems (MIS) Analyst, 0311 Rifleman, 0341 Mortarman).

Restrictions on Officer MOSs include:

1. Restricted Officers cannot hold nonprimary MOSs and will be limited to PMOS – BMOS matches.
2. Colonels are MAGTF Officers and, with the exception of lawyers and MOSs 8059/61 Acquisition Management Professionals, will only hold MOSs 8040, 8041, or 8042 as PMOS. Non-PMOSs will not be associated with General Officers and Colonels with the exception of MOSs 822X/824X Foreign Area Officers and Regional Affairs Officers.
3. MOSs must be required in sufficient numbers as BMOS in TFSMS to be justified. MOSs with no T/O requirement or no inventory are subject to deletion/disapproval.
4. MOSs must serve an HRDP purpose (establish a skill requirement, manpower planning, manages the forces, manage training, identify special pay billets). MOSs not meeting this criteria will be deemed as nonperforming MOSs and subject to deletion/disapproval.
5. A single track is limited to a single MOS. Separate MOSs are not appropriate based on grade changes unless merging with other MOSs.
6. Billet requirements identified by a MOS must include a training concept when established that builds an inventory of Marines prepared for assignment to the BMOS. A concept that awards an MOS after successfully serving in a billet is not valid.

Below are listed the current authorized Marine Corps MOSs, organized by OccFld, then by specific MOS. Most MOSs have specific rank/pay grade requirements and are listed to the right of the MOS title, if applicable (see United States Marine Corps rank insignia), abbreviated from the highest allowed rank to the lowest. Officer ranks are noted as Unrestricted Line Officers (ULOs), Limited Duty Officers (LDOs), and Warrant Officers (WOs). Those MOSs which are no longer being awarded are generally kept active within the Marine's service records to allow Marines to earn a new MOS and to maintain a record of that Marine's previous skills and training over time.