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Chief Petty Officer

Navies Armies Air forces
Commissioned and Non-commissioned officers
Admiral of
the fleet
Marshal or
Field marshal
Marshal of
the air force
Admiral General Air chief marshal
Vice admiral Lieutenant general Air marshal
Rear admiral Major general Air vice-marshal
Commodore Brigadier or
Brigadier general
Air commodore
Captain Colonel Group captain
Commander Lieutenant colonel Wing commander
Lieutenant
commander
Major or
Commandant
Squadron leader
Lieutenant Captain Flight lieutenant
Sub-lieutenant Lieutenant or
First lieutenant
Flying officer
Ensign Second lieutenant Pilot officer
Midshipman Officer cadet Flight cadet
Enlisted grades
Warrant officer or
Chief petty officer
Warrant officer or
Sergeant major
Warrant officer
Petty officer Sergeant Sergeant
Leading seaman Corporal Corporal
Seaman Private Aircraftman

A chief petty officer is a senior non-commissioned officer in many navies and coast guards.

"Chief petty officer" refers to two ranks in the Royal Canadian Navy. A chief petty officer 2nd class (CPO2) (premier maître de deuxième classe or pm2 in French) is equivalent to a master warrant officer in the Army and Air Force, and chief petty officer 1st class (CPO1) (premier maître de première classe or pm1) is equivalent to a chief warrant officer in the Army and Air Force. In spoken references, chief petty officers may be addressed as "chief" but are never addressed as "sir".

"Chief Petty Officer" is the second highest non-commissioned rank in the Royal Australian Navy.

Fleet chief petty officer is a commissioned and gazetted rank in Pakistan Navy above chief petty officer and below master chief petty officer. It is equivalent to the Pakistan Air Force warrant officer and the Pakistan Army subedar.

In the Royal Navy, the rank of chief petty officer comes above that of petty officer and below that of warrant officer class 2, which is being phased out. It is the equivalent of colour sergeant in the Royal Marines, staff sergeant in the Army, and flight sergeant in the Royal Air Force.


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