List of ship decommissionings in 1865
The list of ship decommissionings in 1865 is a chronological list of ships decommissioned in 1865. In cases where no official decommissioning ceremony was held, the date of withdrawal from service may be used instead. For ships lost at sea, see list of shipwrecks in 1865 instead.
| Date | Operator | Ship | Pennant | Class and type | Fate and other notes |
| April | ' | Sold at a public auction on 17 August 1865 | |||
| June 9 | ' | Bark | Decommissioned at Philadelphia Navy Yard and sold at public auction on 10 August 1965 | ||
| June 13 | ' | Sold on 1 October 1867 | |||
| June 16 | ' | Laid up at Washington Navy Yard, Washington, District of Columbia until recommissioned in 1869 | |||
| June 23 | ' | Sold to the Chilean Navy on 1 August 1865 | |||
| June 24 | ' | Placed in reserve until recommissioned in 1882 | |||
| June 28 | ' | Sold on 12 July 1865 | |||
| June 30 | ' | Sold on 17 August 1865 | |||
| July 15 | ' | Transferred to the United States Lighthouse Service on 18 October 1865 | |||
| July 29 | ' | Sold in 1865 | |||
| July 31 | ' | Sold on 30 November 1865 | |||
| August 1 | ' | Sold on 25 November 1865 | |||
| August 4 | ' | Sold on 11 August 1865 | |||
| August 4 | ' | Sold on 17 August 1865 | |||
| August 8 | ' | Sold on 30 August 1865 | |||
| August 11 | ' | Placed in reserve until recommissioned in 1898 | |||
| August 28 | ' | Sold on 30 November 1865 | |||
| September 9 | ' | Sold on 25 October 1865 | |||
| November 25 | ' | Placed in reserve until recommissioned in 1876 | |||
| December 15 | ' | Sold in 1869 | |||
| ' | Sold to Frank Samuel on 14 April 1904 | ||||
| Unknown date | Bretagne | Used as a schoolship and gunnery trainer, then scrapped on 28 January 1880 | |||
| Unknown date | Weser | Sold and scrapped on 29 October 1873 | |||
| Unknown date | ' | Sold on 30 November 1865 |