List of ship commissionings in 2004
The list of ship commissionings in 2004 includes a chronological list of ships commissioned in 2004. In cases where no official commissioning ceremony was held, the date of service entry may be used instead.
| Date | Operator | Ship | Class and type | Notes |
| March 18 | ' | - | ||
| April 19 | ' | - | ||
| April 22 | ' | - | ||
| May 29 | ' | - | ||
| June 26 | ' | - | ||
| July 7 | ' | - | ||
| July 7 |  ship|Maltese patrol boat|P52||2sclass2|Protector|coastal patrol boat|2navy|United StatesUSS|Momsen|DDG-92|3sclass|Arleigh Burke|destroyernavy|United StatesUSS|Chung-Hoon|DDG-93|3sclass|Arleigh Burke|destroyernavy|DenmarkHDMS|Absalon|L16|3sclass|Absalon|support ship|0navy|United StatesUSS|Virginia|SSN-774|3sclass|Virginia|submarinenavy|United KingdomHMS|Bulwark|L15|3sclass|Albion|landing platform docknavy|United StatesUSS|James E. Williams|DDG-95|3sclass|Arleigh Burke|destroyer |