# List of ship launches in 1931

The list of ship launches in 1931 includes a chronological list of ships launched in 1931.
| Date | Country | Builder | Location | Ship | Class | Notes |
| 22 January | United Kingdom | Harland & Wolff | Belfast | Triona | Cargo ship | For British Phosphate Carriers. |
| 5 February | United Kingdom | Harland & Wolff | Belfast | Autocarrier | Ferry | For Southern Railway |
| 19 February | France | Ateliers et Chantiers de France | Dunkirk | Aigle | Aigle-class destroyer | For French Navy. |
| 28 February | Weimar Republic | Blohm + Voss | Hamburg | Savarona | Passenger ship | |
| 5 March | United Kingdom | Harland & Wolff | Belfast | Ogeni | Sternwheeler | For Elder Dempster. |
| 17 March | United Kingdom | Vickers-Armstrongs Ltd. | Newcastle upon Tyne | Monarch of Bermuda | Ocean liner | For Furness Withy. |
| 29 March | France | Ateliers et Chantiers de France | Dunkirk | Vauquelin | Vauquelin-class destroyer | For French Navy. |
| 1 April | United Kingdom | Devonport Dockyard | Devonport | Bideford | Shoreham-class sloop | For Royal Navy. |
| 5 April | Japan | Mitsubishi | Nagasaki | Chōkai | Takao-class cruiser | For Imperial Japanese Navy. |
| 17 April | United Kingdom | Cammell Laird | Birkenhead | Hilary | Cargo liner | For Booth Steamship Co. |
| 14 May | United Kingdom | Harland & Wolff | Belfast | Cliona | Tanker | For Anglo-Saxon Petroleum Co. |
| 16 May | United Kingdom | Berthon Boat Co. Ltd | Lymington | Lexia | Motor yacht | For Thomas P. Rose-Richards. |
| 19 May | Germany | Deutsche Werke | Kiel | Deutschland | Deutschland-class cruiser | For Reichsmarine. |
| 21 May | United Kingdom | Harland & Wolff | Belfast | Maracay | Tanker | For Lago Shipping Co. |
| June | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C.661 | Barge | For Inland Waterways Commission. |
| 2 July | United Kingdom | Harland & Wolff | Belfast | Conch | Tanker | For Anglo-Saxon Petroleum Co. |
| 16 July | United Kingdom | Chatham Dockyard | Chatham | Rochester | Shoreham-class sloop | For Royal Navy. |
| 18 July | France | Arsenal de Cherbourg | Cherbourg | L'Espoir | Redoutable-class submarine | For French Navy. |
| 18 July | United Kingdom | Vickers Shipbuilding and Engineering | Barrow-in-Furness | Strathaird | | For Peninsular and Oriental Steam Navigation Company. |
| 14 August | France | Arsenal de Lorient | Lorient | Épervier | Aigle-class destroyer | For French Navy. |
| August | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 662 | Barge | For Inland Waterways Commission]]. |
| August | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 663 | Barge | For Inland Waterways Commission]]. |
| 24 September | United Kingdom | Devonport Dockyard | Devonport | Leander | Leander-class cruiser | For Royal Navy. |
| 29 September | United Kingdom | Vickers Armstrong | Barrow-in-Furness | Cygnet | C-class destroyer | For Royal Navy. |
| 29 September | United Kingdom | Vickers Armstrong | Barrow-in-Furness | Crescent | C-class destroyer | For Royal Navy. |
| 30 September | United Kingdom | Portsmouth Dockyard | Portsmouth | Comet | C-class destroyer | Royal Navy. |
| 30 September | United Kingdom | Portsmouth Dockyard | Portsmouth | Crusader | C-class destroyer | For Royal Navy. |
| 30 September | Italy | Cantieri Riuniti dell'Adriatico | Trieste | Luigi Cadorna | Condottieri-class cruiser | For Regia Marina. |
| September | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 664 | Barge | For Inland Waterways Commission]]. |
| 10 October | United States | Bethlehem Steel Co. | Quincy, Massachusetts | Monterey | Ocean liner | For Matson Navigation Co. |
| 13 October | France | Arsenal de Lorient | Lorient | Milan | Aigle-class destroyer | For French Navy. |
| 28 October | Italy | Cantieri Riuniti dell'Adriatico | Trieste | Conte di Savoia | Ocean liner | For Italian Line. |
| 29 October | United Kingdom | J. Samuel White | Cowes | Kempenfelt | C-class destroyer | For Royal Navy |
| October | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 665 | Barge | For Inland Waterways Commission]]. |
| 7 November | United States | New York Shipbuilding Corporation | Camden, New Jersey | Indianapolis | Portland-class cruiser | For United States Navy. |
| 8 November | France | Ateliers et Chantiers de Bretagne | Nantes | Cassard | Vauquelin-class destroyer | For French Navy. |
| 9 November | France | Ateliers et Chantiers de Saint-Nazaire Penhoët | Saint-Nazaire | Maillé Brézé | Vauquelin-class destroyer | For French Navy. |
| 12 November | United Kingdom | Harland & Wolff | Belfast | Georgic | Ocean liner | For White Star Line. |
| 14 November | France | Ateliers et Chantiers de la Loire | Saint-Nazaire | Kersaint | Vauquelin-class destroyer | For French Navy. |
| November | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 666 | Barge | For Inland Waterways Commission]]. |
| 5 December | Italy | OTO Livorno | Livorno | Pola | Zara-class cruiser | For Regia Marina. |
| 7 December | France | Ateliers et Chantiers de la Loire | Saint-Nazaire | Tartu | Vauquelin-class destroyer | For French Navy. |
| 10 December | United Kingdom | Harland & Wolff | Belfast | Highland Patriot | Passenger ship | For Nelson Steamship Co. |
| 15 December | United States | New York Shipbuilding | Camden, New Jersey | Manhattan | Ocean liner | |
| 23 December | United Kingdom | Harland & Wolff | Belfast | Lightship No. 87 | Lightship | For Trinity House. |
| December | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | I.W.C. 667 | Barge | For Inland Waterways Commission]]. |
| Unknown date | United Kingdom | Abdela & Mitchell Ltd. | Brimscombe | Avon Queen | Motor barge | For Francis & Niblett. |
| Unknown date | United Kingdom | Swan, Hunter & Wigham Richardson Ltd. | Southwick | Flathouse | Collier | For Stephenson Clarke. |
| Unknown date | United Kingdom | Cochrane & Son Ltd. | Selby | Hoedic | Tug | For Compagnie Nazairienne de Remorquage et de Sauvetage. |
| Unknown date | United Kingdom | Isaac J. Abdela & Mitchell (1925) Ltd. | Queensferry | John Hickman | Barge | For Spillers Ltd. |
| Unknown date | United States | Bethlehem Shipbuilding Corporation | Quincy, Massachusetts | Mariposa | Ocean Liner | For Matson Line. |
| Unknown date | United Kingdom | J. Bolson & Son Ltd. | Poole | Skylark 8 | Motor vessel | For J. Bolson & Son Ltd. |