List of ship decommissionings in 1955
The list of ship decommissionings in 1955 includes a chronological list of all ships decommissioned in 1955. 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 1955 instead.
| Operator | Ship | Class and type | Fate | Other notes | |
| 15 January | ' | Reserve | Recommissioned as | ||
| 21 January | ' | anti-submarine carrier | Reserve | Transferred to Spain in 1967 and renamed Dedalo | |
| 18 February | ' | Scrapped | Reserve until stricken in 1960 | ||
| 30 June | ' | Scrapped | Reserve until stricken in 1971 | ||
| 4 August | ' | Scrapped | Reserve until stricken in 1959 | ||
| 12 August | light aircraft carrier | Returned to the United Kingdom | |||
| 15 December | ' | Reserve | Activated by the Military Sea Transportation Service in 1965 |