FCO

FCO may mean:

• Buenos Aires Western Railway (Spanish: Ferrocarril Oeste de Buenos Aires)
• Club Ferro Carril Oeste, an Argentine football club
• Farm Cove Observatory, in New Zealand
• Federal Cartel Office, in Germany
• Fellow of the College of Organists
• Financial control officer, one of various names for a management-level position responsible for supervising the quality of accounting and financial reporting of an organization, also known as a comptroller
• Foreign and Commonwealth Office, the United Kingdom's Ministry of Foreign Affairs
• Fort Collins, Colorado, United States
• Leonardo da Vinci–Fiumicino Airport, near Rome, Italy
• Final Certificate of Occupancy