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 [1] |  United States Navy | Randolph | Essex-class aircraft carrier | Placed in reserve until recommissioned in 1953 |
| 23 March [2] |  Royal Canadian Navy | Warrior | Colossus-class aircraft carrier | Returned to the Royal Navy |
| 21 April [3] | United States Navy | Texas | New York-class battleship | Donated to Texas as a museum ship and preserved at the San Jacinto Battleground State Historic Site |
| 28 May |  Royal Netherlands Navy | Karel Doorman | Nairana-class escort carrier | Returned to the Royal Navy, converted to merchant ship Port Victor |