| Office of the Chief of Staff, Fleet | |
|---|---|
 Ensign of the Royal Navy | |
| Ministry of Defence | |
| Reports to | Commander-in-Chief Fleet |
| Nominator | Secretary of State for Defence |
| Appointer | Prime Minister Subject to formal approval by the Queen-in-Council |
| Term length | Not fixed (typically 1–3 years) |
| Inaugural holder | Vice-Admiral, John Ernle Pope |
| Formation | 1971-2012 |
The Chief of Staff, Fleet (COSFLEET) also formally known as Chief of Staff to the Commander-in-Chief Fleet was a senior British Royal Navy appointment. The office holder was the Commander-in-Chief, Fleet's principal staff officer responsible for coordinating the supporting staff of Fleet Headquarters, Northwood, from November 1971 to February 2012.