List of ship commissionings in 1919
The list of ship commissionings in 1919 is a chronological list of ships commissioned in 1919. 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 | Ref |
| 24 January | ' | ||||
| 15 February | ' | ||||
| 20 February | ' | ||||
| 25 February | ' | ||||
| 1 March | ' | ||||
| 8 March | ' | ||||
| 24 March | ' | ||||
| 18 April | ' | ||||
| 21 April | ' | under command of Cmdr. Raymond A. Spruance | |||
| 15 May | ' | ||||
| 26 May | ' | ||||
| 26 June | ' | ||||
| 19 July | ' | under command of Lieutenant Commander William N. Richardson Jr. | |||
| 13 October | ' | oiler | |||
| 15 November | ' | oiler | |||
| unknown date | United States Coast and Geodetic Survey | Audwin | survey vessel | former section patrol vessel | |
| unknown date | United States Bureau of Fisheries | ' | cargo ship | former fishing vessel Idaho commissioned in the summer of 1919 as a cargo liner |