List of ship commissionings in 1898
The list of ship commissionings in 1898 includes a chronological list of ships commissioned in 1898. 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 13 | ' | - | ||
| April 2 | ' | Torpedo boat | - | |
| April 12 | ' | monitor | Recommissioned for Spanish–American War service | |
| April 15 | ' | |||
| April 26 | ' | monitor | Recommissioned for Spanish–American War service | |
| April | ' | - | ||
| May 13 | ' | monitor | Recommissioned for Spanish–American War service | |
| May 16 | ' | monitor | Recommissioned for Spanish–American War service | |
| May 20 | ' | Collier | Former merchant ship by the same name purchased from J. Graham; commissioned at New York Navy Yard. | |
| June | ' | Pre-dreadnought battleship | - | |
| June | ' | Pre-dreadnought battleship | - | |
| July | ' | protected cruiser | - | |
| October 7 | - |