List of ship commissionings in 1903
The list of ship commissionings in 1903 is a chronological list of ships commissioned in 1903. 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 |
| January 12 | ' | |||
| January 17 | ' | |||
| February 17 | ' | |||
| February 19 | ' | |||
| April | ' | |||
| May 12 | ' | |||
| May 25 | ' | |||
| May 28 | ' | |||
| May 28 | ' | |||
| June 2 | ' | |||
| June 10 | ' | armored cruiser | ||
| June 15 | ' | |||
| July 28 | ' | |||
| September 19 | ' | |||
| September 19 | ' | |||
| September 19 | ' | |||
| October 8 | ' | |||
| November 3 | ' | collier | ||
| November 12 | ' | |||
| December 1 | ' | |||
| December 12 |