Look up master chief petty officer in Wiktionary, the free dictionary.
Master Chief May refer to:
- Master chief petty officer, a military enlisted rate in the United States Navy and Coast Guard
- Master Chief Petty Officer of the Coast Guard, a unique non-commissioned rank and position in the United States Coast Guard
- Master Chief Petty Officer of the Navy, a unique non-commissioned rank of the United States Navy
- Master Chief Musician
- Master Chief Hospital Corpsman
- Master Chief (Halo), the protagonist of the Halo series
