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The list of ship decommissionings in 1955 includes a chronological list of all ships decommissioned in 1955.
| Operator | Ship | Class and type | Fate | Other notes | |
|---|---|---|---|---|---|
| 15 January |  United States Navy
|
Gilbert Islands | Commencement Bay-class escort carrier | Reserve | Recommissioned as USS Annapolis |
| 21 January | United States Navy
|
Cabot | Independence-class anti-submarine carrier | Reserve | Transferred to Spain in 1967 and renamed Dedalo |
| 18 February | United States Navy
|
Bairoko | Commencement Bay-class escort carrier | Scrapped | Reserve until stricken in 1960 |
| 30 June | United States Navy
|
Rendova | Commencement Bay-class escort carrier | Scrapped | Reserve until stricken in 1971 |
| 4 August | United States Navy
|
Mindoro | Commencement Bay-class escort carrier | Scrapped | Reserve until stricken in 1959 |
| 12 August |  Royal Australian Navy
|
Vengeance | Returned to the United Kingdom | ||
| 15 December | United States Navy
|
Kula Gulf | Commencement Bay-class escort carrier | Reserve | Activated by the Military Sea Transportation Service in 1965[1] |