The list of ship decommissionings in 1948 includes a chronological list of ships decommissioned in 1948. 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 1948 instead.
| Date | Operator | Ship | Class and type | Fate and other notes | |
|---|---|---|---|---|---|
| 25 February | Placed in reserve until recommissioned in 1953 | ||||
| 21 April | Donated to Texas as a museum ship and preserved at the San Jacinto Battleground State Historic Site | ||||
| 28 May | Returned to the Royal Navy, converted to merchant ship Port Victor | ||||
| unknown date | Returned to the Royal Navy |