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The list of ship decommissionings in 1956 includes a chronological list of all ships decommissioned in 1956.
| Operator | Ship | Class and type | Fate | Other notes | |
|---|---|---|---|---|---|
| 16 January |  United States Navy
|
Monterey | Independence-class anti-submarine carrier | Scrapped | Reserve until stricken in 1970[1] |
| 3 June | United States Navy
|
Siboney | Commencement Bay-class escort carrier | Scrapped | Reserve until stricken in 1970 |
| 31 August | United States Navy
|
Point Cruz | Commencement Bay-class escort carrier | Reserve | Reactivated by the Military Sea Transportation Service in 1965 |
| Date uncertain |  Royal Canadian Navy
|
Magnificent | Majestic-class aircraft carrier |