First officer

First officer may refer to:

• Chief mate, the second-in-command (usually) of a merchant ship
• First officer (aviation) or "co-pilot", the second pilot of a civil aircraft

• Executive officer (military), the second-in-command of a naval vessel
• First officer, the most senior civil service position in the United States Foreign Service
• First officer, a rank in the Air Transport Auxiliary corresponding to Flight Lieutenant in the Royal Air Force
• First officer, a rank in the Women's Royal Naval Service corresponding to Lieutenant-Commander in the Royal Navy

This disambiguation page lists articles associated with the title First officer.
If an internal link led you here, you may wish to change the link to point directly to the intended article.