United States Amy Rank Abbreviations and Acronyms

1. MMS1
   MACHINIST'S MATE (SHOP MACHINIST) 1ST CLASS PETTY OFFICER
2. MMS3
   MACHINIST'S MATE (SHOP MACHINIST) 3RD CLASS PETTY OFFICER
3. MMSRS
   MACHINIST'S MATE (SHIP REPAIR-INSIDE)
4. MMW1
   MACHINIST'S MATE (WATCHMAKER)
5. MMW2
   MACHINIST'S MATE (WATCHMAKER)
6. MN1
   MINEMAN 1ST CLASS PETTY OFFICER
7. MN2
   MINEMAN 2ND CLASS PETTY OFFICER
8. MNSN
   MINEMAN SEAMAN
9. MOMM1
   MOTOR MACHINIST'S MATE 1ST CLASS PETTY OFFICER
10. MOMM2
    MOTOR MACHINIST'S MATE 2ND CLASS PETTY OFFICER
11. MOMM3
    MOTOR MACHINIST'S MATE 3RD CLASS PETTY OFFICER
12. MOMMSRD
    MOTOR MACHINIST'S MATE (SHIP REPAIR-DIESEL)
13. MOMMSRG
    MOTOR MACHINIST'S MATE (SHIP REPAIR-GASOLINE)
14. MPCOCG
    Master Chief Petty Officer of the Coast Guard
15. MR1
    MACHINERY REPAIRMAN PETTY OFFICER 1ST CLASS
16. MSSN
    MESS MANAGEMENT SPECIALIST SEAMAN
17. MU1
    MUSICIAN PETTY OFFICER 1ST CLASS
18. MU3
    MUSICIAN PETTY OFFICER 3RD CLASS
19. MUS1
    MUSICIAN 1ST CLASS PETTY OFFICER
20. MUS2
    MUSICIAN 2ND CLASS PETTY OFFICER

Last updated: May 24, 2020 — Total entries: 3,362