The list of ship commissionings in 1990 includes a chronological list of all ships commissioned in 1990.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 25 April |  Royal Netherlands Navy | Zeeleeuw | Walrus-class submarine | S803 | ||
| 16 June |  United States Navy | Monterey | Ticonderoga-class cruiser | CG-61 | ||
| 30 June | United States Navy | Miami | Los Angeles-class submarine | SSN-755 | ||
| 17 November | United States Navy | Tortuga | Whidbey Island-class dock landing ship | LSD-46 | ||
| December |  People's Liberation Army Navy | Changzheng 5 | Type 091 submarine | 405 | Date of initial operational capability |