Command master chief petty officer

(United States)
Command Master Chief Petty Officer
Navy CMDCM / USCG CMC
Navy CMDCM / USCG CMC

Navy Fleet / Force MCPO

USCG MCPO Gold
Country United States
Service branch United States Navy
 United States Coast Guard
AbbreviationCMDCM / CMC
Rank groupnon-commissioned officer
NATO rank codeOR-9
Pay gradeE-9
Next higher rankMaster Chief Petty Officer of the Navy
Master Chief Petty Officer of the Coast Guard
Next lower rankMaster chief petty officer

Command master chief petty officer (CMDCM) is an enlisted rating in the United States Navy and U.S. Coast Guard, as well as a billet in the Japan Maritime Self-Defense Force.

In the U.S. Navy, the command master chief petty officer is the senior enlisted advisor at a command and as such works as a liaison between the commanding officer and the enlisted ranks, serving as the senior enlisted leader. In this capacity, the CMDCM assists the commanding officer in issues of quality of life, discipline, training, and morale. Collectively, the CMDCM, commanding officer, and executive officer are referred to as the "big three".