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 |  Japan Maritime Self-Defense Force | Makinami (DD-112) | Takanami-class destroyer | |
| April 19 |  Indian Navy | Tabar (F44) | Talwar-class frigate | |
| April 22 |  Royal Netherlands Navy | De Ruyter (F804) | De Zeven Provinciën-class frigate | |
| May 29 |  United States Navy | Pinckney (DDG-91) | Arleigh Burke-class destroyer | |
| June 26 |  Royal Australian Navy | Ballarat (FFH 155) | Anzac-class frigate | |
| July 7 | Indian Navy | Betwa (F39) | Brahmaputra-class frigate | |
| July 7 |  Maritime Squadron AFM | P52 | Protector-class coastal patrol boat | |
| August 28 | United States Navy | Momsen (DDG-92) | Arleigh Burke-class destroyer | |
| September 18 | United States Navy | Chung-Hoon (DDG-93) | Arleigh Burke-class destroyer | |
| October 19 |  Royal Danish Navy | Absalon (L16) | Absalon-class auxiliary ship / frigate | |
| October 23 | United States Navy | Virginia (SSN-774) | Virginia-class submarine | |
| December 10 |  Royal Navy | Bulwark (L15) | Albion-class landing platform dock | |
| December 11 | United States Navy | James E. Williams (DDG-95) | Arleigh Burke-class destroyer |
