# List of ship commissionings in 2021

The list of ship commissionings in 2021 includes a chronological list of all ships commissioned in 2021.
| | Operator | Ship | Class and type | Pennant | Other notes |
| Unknown | People's Liberation Army Navy | Jining | Jiangdao-class corvette | 636 | For PLAN |
| January | People's Liberation Army Navy | Suzhou | Luyang III-class destroyer | 132 | For PLAN |
| January | People's Liberation Army Navy | Dongying | Jiangdao-class corvette | 607 | For PLAN |
| January | People's Liberation Army Navy | Tianmen | Jiangdao-class corvette | 631 | For PLAN |
| January | People's Liberation Army Navy | Tongling | Jiangdao-class corvette | 629 | For PLAN |
| January | People's Liberation Army Navy | Shizuishan | Jiangdao-class corvette | 609 | For PLAN |
| January | People's Liberation Army Navy | Aba | Jiangdao-class corvette | 630 | For PLAN |
| 30 January | People's Liberation Army Navy | Nanyang | Jiangdao-class corvette | 619 | For PLAN |
| 30 January | Russian Navy | Grayvoron | Buyan-M-class corvette | 600 | For Russian Navy |
| February | People's Liberation Army Navy | Huainan | Luyang III-class destroyer | 123 | For PLAN |
| February | People's Liberation Army Navy | Shangqiu | Jiangdao-class corvette | 618 | For PLAN |
| 4 February | People's Liberation Army Navy | Shiyan | Jiangdao-class corvette | 637 | For PLAN |
| 7 March | People's Liberation Army Navy | Lhasa | Renhai-class destroyer | 102 | For PLAN |
| 12 March | Italian Navy | Vulcano | Vulcano-class logistic support ship | A 5335 | For Italian Navy |
| 16 March | Japan Maritime Self-Defense Force | Etajima | Awaji-class minesweeper | MSO-306 | For Japanese Navy |
| 19 March | Japan Maritime Self-Defense Force | Haguro | Maya-class destroyer | DDG-180 | For Japanese Navy |
| 24 March | Japan Maritime Self-Defense Force | Tōryū | Sōryū-class submarine | SS-512 | For Japanese Navy |
| 6 April | Indonesian Navy | Alugoro | Nagapasa-class submarine | 405 | For Indonesian Navy |
| 12 April | People's Liberation Army Navy | Nanning | Luyang III-class destroyer | 162 | For PLAN |
| 16 April | People's Liberation Army Navy | Kaifeng | Luyang III-class destroyer | 124 | For PLAN |
| 16 April | French Navy | Alsace | Aquitaine-class frigate | D656 | For French Navy |
| 17 April | United States Navy | Oakland | Independence-class littoral combat ship | LCS-24 | For U.S. Navy |
| 23 April | People's Liberation Army Navy | Changzheng 21 | Jin-class submarine | 421 | For PLAN |
| 23 April | People's Liberation Army Navy | Dalian | Renhai-class destroyer | 105 | For PLAN |
| 23 April | People's Liberation Army Navy | Hainan | Yushen-class amphibious assault ship | 31 | For PLAN |
| 5 May | Russian Navy | Kazan | Yasen-M-class submarine | K-561 | For Russian Navy |
| 8 May | United States Navy | Miguel Keith | Lewis B. Puller-class expeditionary mobile base | ESB-5 | For U.S. Navy |
| 17 May | German Navy | Sachsen-Anhalt | Baden-Württemberg-class frigate | F224 | For German Navy |
| 22 May | United States Navy | Mobile | Independence-class littoral combat ship | LCS-26 | For U.S. Navy |
| 2 June | Spanish Navy | Reina Ysabel | Suardiaz Galizia-class logistics support ship | A-06 | For Spanish Navy |
| 18 June | Royal Navy | Spey | River-class offshore patrol vessel | P234 | For Royal Navy |
| 12 July | Indonesian Navy | Teluk Youtefa | Teluk Bintuni-class tank landing ship | 522 | For Indonesian Navy |
| 27 July | Republic of China Navy | Ta Chiang | Tuo Chiang-class corvette | PGG-619 | For ROCN |
| 8 August | Russian Navy | Vsevolod Bobrov | Elbrus-class logistics support vessel | RLO52 | For Russian Navy |
| 20 August | Russian Navy | Georgiy Kurbatov | Alexandrit-class minesweeper | 631 | For Russian Navy |
| 28 August | Royal Navy | Severn | River-class offshore patrol vessel | P282 | For Royal Navy (recomissioned) |
| September | Republic of China Navy | FMLB-2 | Min Jiang-class minelayer | FMLB-2 | For ROCN |
| September | People's Liberation Army Navy | Guilin | Luyang III-class destroyer | 164 | For PLAN |
| 23 September | Royal Navy | Audacious | Astute-class submarine | S122 | For Royal Navy |
| 12 October | Russian Navy | Magadan | Improved Kilo-class submarine | B-602 | For Russian Navy |
| 11 November | People's Liberation Army Navy | Anshan | Renhai-class destroyer | 103 | For PLAN |
| December | Republic of China Navy | FMLB-3 | Min Jiang-class minelayer | FMLB-3 | For ROCN |
| December | Republic of China Navy | FMLB-4 | Min Jiang-class minelayer | FMLB-4 | For ROCN |
| 8 December | United States Navy | Daniel Inouye | Arleigh Burke-class destroyer | DDG-118 | For U.S. Navy |
| 21 December | Russian Navy | Knyaz Oleg | Borei-A-class submarine | K-552 | For Russian Navy |
| 21 December | Russian Navy | Novosibirsk | Yasen-M-class submarine | K-573 | For Russian Navy |
| 25 December | People's Liberation Army Navy | Zhanjiang | Luyang III-class destroyer | 165 | For PLAN |
| 28 December | People's Liberation Army Navy | Baotou | Luyang III-class destroyer | 133 | For PLAN |