The list of ship commissionings in 2011 includes a chronological list of all ships commissioned in 2011.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 16 March |  Japan Maritime Self-Defense Force
|
Ise | Hyūga-class helicopter destroyer | DDH-182 | ||
| 6 May |  Royal Navy
|
Diamond | Type 45 destroyer | D34 | ||
| 19 May |  United States Navy
|
William P. Lawrence | Arleigh Burke-class destroyer | DDG-110 | ||
| 30 May |  People's Liberation Army Navy
|
Changzhou | Type 054A frigate | 549 | ||
| 9 June | People's Liberation Army Navy
|
Yantai | Type 054A frigate | 538 | ||
| 23 June | Royal Navy
|
Protector | A173 | |||
| 1 September | United States Navy
|
Spruance | Arleigh Burke-class destroyer | DDG-111 | ||
| 29 October | United States Navy
|
California | Virginia-class submarine | SSN-781 | ||
| 30 October | People's Liberation Army Navy
|
Jinggang Shan | Type 071 amphibious transport dock | 999 |