Officer

An officer is a person who has a position of authority in a hierarchical organization. The term derives from the late Latin from officiarius, meaning "official".

Examples

Military

• Officer (armed forces)

Shipping industry

• Captain (nautical), the person in charge of a merchant ship
• Chief officer or chief mate, typically the person in charge of the deck department of a merchant ship
• Second officer or second mate, typically the navigator and medical officer on a merchant ship
• Third officer or third mate, typically the safety officer on a merchant ship
• Chief Engineering Officer. The person in charge of the technical department on a merchant ship.
• Second Engineering Officer. The person in charge of the engine room on a merchant ship.
• Third Engineering Officer. An Engineering Officer of the Watch.

Law enforcement

• Corrections officer
• Customs officer
• Officer of the court
• Bylaw enforcement officer
• Parking enforcement officer
• FBI
• Police officer
• Security officer

Politics and government

• Chief Medical Officer
• Presiding Officer (disambiguation)
• Returning officer
• Foreign Service Officer, a diplomatic officer

Ceremonial and other contexts

• Bank officer
• Chief academic officer, a provost
• Corporate officer, a corporate title
• First Officer (disambiguation)
• Great Officer of State
• Merchant marine officer or licensed mariner
• Officer of arms
• Officer, a grade, class, or rank of within certain chivalric orders and orders of merit (e.g. Order of the British Empire, National Order of the Cedar, Légion d'honneur)
• Officer in The Salvation Army, and other state decorations
• Sabbatical officer