The list of ship commissionings in 1926 is a chronological list of ships commissioned in 1926. In cases where no official commissioning ceremony was held, the date of service entry may be used instead.
| Operator | Ship | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|
| 18 January |  Royal Netherlands Navy | HNLMS O 9 | O 9-class submarine | O 9 | |
| 18 January | Royal Netherlands Navy | HNLMS O 11 | O 9-class submarine | O 11 | |
| 25 March | Royal Netherlands Navy | HNLMS Flores | Flores-class gunboat | F 801 | |
| 29 March | Royal Netherlands Navy | HNLMS K XIII | K XI-class submarine | K XIII | |
| 12 April | Royal Netherlands Navy | HNLMS Soemba | Flores-class gunboat | ||
| 26 May | Royal Netherlands Navy | HNLMS Sumatra | Java-class cruiser | ||
| 1 September | Royal Netherlands Navy | HNLMS O 10 | O 9-class submarine | O 10 |