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The list of ship decommissionings in 1943 includes a chronological list of all ships decommissioned in 1943.
| Operator | Ship | Class and type | Fate | Other notes | |
|---|---|---|---|---|---|
| 19 July |  United States Navy
|
Baffins | Bogue-class escort carrier | Lend-Lease transfer to United Kingdom | Renamed HMS Ameer |
| 31 July | United States Navy
|
Glacier | Bogue-class escort carrier | Lend-Lease transfer to United Kingdom | Renamed HMS Atheling |
| 6 August | United States Navy
|
Pybus | Bogue-class escort carrier | Lend-Lease transfer to United Kingdom | Renamed HMS Emperor[1] |
| 12 August | United States Navy
|
Bolinas | Bogue-class escort carrier | Lend-Lease transfer to United Kingdom | Renamed HMS Begum |
| September |  Royal Navy
|
Newmarket | Wickes-class destroyer | Reduced to care and maintenance status | |
| 6 November | Royal Navy
|
Archer | Long Island-class escort carrier | reduced to care and maintenance | Transferred to Ministry of War Transport in 1945 and renamed Empire Lagan |