The list of ship commissionings in 1963 includes a chronological list of all ships decommissioned in 1963.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 15 March |  Royal Navy | Hampshire | County-class destroyer | D06 | ||
| 23 March | Lloyd Triestino | Galileo Galilei |  Italy | Ocean liner | ||
| 13 April |  United States Navy | Tattnall | Charles F. Adams-class destroyer | DDG-19 | ||
| 11 May | United States Navy | Wright | Saipan-class aircraft carrier converted to command ship | CC-2 | ||
| 6 June |  German Navy | Lübeck | Köln-class frigate | F224 | ||
| 20 June | Rederi Ab Ålandsfärjan | Ålandsfärjan |  Finland | Ferry | ex-Brittany with Southern Railway Co. | |
| 15 July |  French Navy | Foch | Clemenceau-class aircraft carrier | R99 | ||
| 20 July | United States Navy | Guadalcanal | Iwo Jima-class amphibious assault ship | LPH-7 | ||
| 3 August | United States Navy | Worden | Leahy-class cruiser | CG-18 | ||
| 15 August | Royal Navy | Kent | County-class destroyer | D12 | ||
| 4 November | Royal Navy | London | County-class destroyer | D16 | ||
| 9 November | United States Navy | Goldsborough | Charles F. Adams-class destroyer | DDG-20 |