# List of ship launches in 1920

The list of ship launches in 1920 includes a chronological list of ships launched in 1920. In cases where no official launching ceremony was held, the date built or completed may be used instead.
| Date | Country | Builder | Location | Ship | Class and type | Notes |
| 12 January | United Kingdom | Harland & Wolff | Belfast | Ekari | Cargo ship | For Elder Dempster. |
| 18 February | United States | Pacific Coast Shipbuilding Company | Bay Point, California | Cuprum | Cargo ship | For United States Shipping Board |
| 24 February | United States | Newport News Shipbuilding | Newport News, Virginia | Abel P. Upshur | Clemson-class destroyer | For United States Navy. |
| February | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Indorita | Coaster | For John Summers & Sons Ltd. |
| 3 March | United Kingdom | Burntisland Shipbuilding Company | Burntisland, Fife | Sydney Lasry | Cargo ship | For Compagnie Lasry |
| 6 March | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Hebe | Cargo ship | For Sociètè Navale Caennaise. |
| 9 March | Japan | Mitsubishi | Kobe | Submarine No. 26 (Ro-52) | Type L1 submarine | For Imperial Japanese Navy |
| 20 March | United States | Newport News Shipbuilding | Newport News, Virginia | Maryland | Colorado-class battleship | For United States Navy |
| 25 March | Germany | Werft Nobiskrug GmbH | Rendsburg | Oliva | Fishing trawler | For Hochseefischerei Trave |
| 25 March | United Kingdom | Harland & Wolff | Belfast | War Pageant | N-type cargo ship | For Elder Dempster. |
| March | United Kingdom | Vickers-Armstrongs Ltd. | Barrow-in-Furness | Scythia | Cargo liner | For Cunard Line. |
| 7 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.6 | Oil barge | For British Mexican Petroleum Company. |
| 7 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.7 | Oil barge | For British Mexican Petroleum Company. |
| 15 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.2 | Oil barge | For British Mexican Petroleum Company. |
| 15 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.3 | Oil barge | For British Mexican Petroleum Company. |
| 15 April | United Kingdom | Harland & Wolff | Belfast | Glenogle | Cargo ship | For Glen Line. |
| 21 April | United States | Newport News Shipbuilding | Newport News, Virginia | Sepulga | Patoka-class oiler | For United States Navy |
| 22 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.8 | Oil barge | For British Mexican Petroleum Company. |
| 22 April | United Kingdom | Harland & Wolff | Belfast | Dorsetshire | Cargo ship | For Bibby Steamship Co. |
| 29 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.4 | Oil barge | For British Mexican Petroleum Company. |
| 29 April | United Kingdom | Harland & Wolff | Belfast | Britmex No.5 | Oil barge | For British Mexican Petroleum Company. |
| April | France | Société Nouvelle des Forges et Chantiers de la Méditerranée | La Seyne-sur-Mer | Béarn | Normandie-class battleship | For French Navy |
| April | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Eldorita | Coaster | For John Summers & Sons Ltd. |
| 5 May | United States | Newport News Shipbuilding | Newport News, Virginia | Salinas | Patoka-class oiler | For United States Navy |
| 6 May | United Kingdom | Harland & Wolff | Belfast | La Paz | Cargo ship | For Pacific Steam Navigation Company. |
| 7 May | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Niobe | Cargo ship | For G. Lamy & Cie. |
| 5 June | United States | Newport News Shipbuilding | Newport News, Virginia | Tippecanoe | Patoka-class oiler | For United States Navy |
| 10 June | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Bachi | Cargo ship | For Hijos de Astigarraga. |
| 17 June | United Kingdom | Harland & Wolff | Belfast | Bonheur | A-type cargo ship | For Lamport & Holt. |
| 1 July | United Kingdom | Harland & Wolff | Belfast | War Bamboo | A-type cargo ship | For British Shipping Controller. |
| 3 July | United States | Newport News Shipbuilding | Newport News, Virginia | Trinity | Patoka-class oiler | For United States Navy |
| 6 July | Japan | Mitsubishi | Kobe | Submarine No. 27 (Ro-53) | Type L2 submarine | For Imperial Japanese Navy |
| 13 July | United Kingdom | Harland & Wolff | Govan | Inveritchen | Tanker | For British Mexican Petroleum Company. |
| 14 July | United Kingdom | Harland & Wolff | Belfast | Glenapp | Cargo ship | For Glen Line. |
| 17 July | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Cornish Trader | Coaster | For Cornish Traders Ltd. |
| 17 July | Japan | Sasebo Naval Arsenal | Sasebo | Submarine No. 43 (Ro-25) | Kaichū III-type submarine | For Imperial Japanese Navy |
| 30 July | United Kingdom | Lithgows | Port Glasgow | Maudie | Tanker | For A/S Hvalen |
| 31 July | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Française | Cargo ship | For Fernand Bouet. |
| 2 August | United States | Pacific Coast Shipbuilding Company | Bay Point, California | Namasket | Cargo ship | For United States Shipping Board |
| 26 August | United Kingdom | Harland & Wolff | Belfast | Inverleith | Tanker | For British Mexican Petroleum Company. |
| 27 August | United Kingdom | Harland & Wolff | Belfast | Calgary | Refrigerated cargo ship | For Elder Dempster. |
| 9 September | United Kingdom | Harland & Wolff | Govan | Inverampton | Tanker | For British Mexican Petroleum Company. |
| 20 September | United States | J. F. Duthie & Company | Seattle, Washington | Griffdu | Cargo ship | For Universal Steamship & Barge Co. |
| 28 September | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Delfina | Cargo ship | For F. Sainz e Inchaustegui. |
| 28 September | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Mary Nickerson | Coaster | For Moffat Steamship Co. Ltd. |
| 30 September | United Kingdom | Harland & Wolff | Belfast | Glengarry | Cargo ship | For Glen Line. |
| 13 October | United Kingdom | Northumberland Shipbuilding Co. Ltd. | Newcastle upon Tyne | Eastney | Cargo ship | For Romney Steamship Co. Ltd. |
| 13 October | Japan | Mitsubishi | Kobe | Submarine No. 28 (Ro-54) | Type L2 submarine | For Imperial Japanese Navy |
| 14 October | United Kingdom | Harland & Wolff | Belfast | Lobos | Cargo ship | For Pacific Steam Navigation Company. |
| 14 October | United Kingdom | Harland & Wolff | Belfast | Redbreast | Coaster | For Coast Lines. |
| 14 October | Japan | Kure Naval Arsenal | Kure | Submarine No. 24 (Ro-15) | Kaichū II-type submarine | For Imperial Japanese Navy |
| 26 October | Japan | Yokosuka Naval Arsenal | Yokosuka | Submarine No. 38 (Ro-20) | Kaichū III-type submarine | For Imperial Japanese Navy |
| 26 October | Japan | Yokosuka Naval Arsenal | Yokosuka | Submarine No. 39 (Ro-21) | Kaichū III-type submarine | For Imperial Japanese Navy |
| 28 October | United Kingdom | Harland & Wolff | Belfast | SS Bompata (1920) | B-type cargo ship | For Elder Dempster. |
| 30 October | United Kingdom | Harland & Wolff | Belfast | Britmex No.1 | Oil barge | For British Mexican Petroleum Company. |
| 30 October | United Kingdom | Harland & Wolff | Belfast | Britmex No.9 | Oil barge | For British Mexican Petroleum Company. |
| 11 November | United Kingdom | Harland & Wolff | Belfast | Pittsburgh | Ocean liner | For International Navigation Company. |
| 25 November | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Caennaise | Cargo ship | For Fernand Bouet. |
| 27 November | United Kingdom | Harland & Wolff | Belfast | Baradine | Passenger ship | For Peninsular & Oriental Steam Navigation Company. |
| 29 November | United Kingdom | Harland & Wolff | Belfast | Lady Valentia | Coaster | For Coast Lines. |
| 14 December | United States | Todd Dry Dock and Construction Company | | Omaha | Omaha-class cruiser | For United States Navy |
| 15 December | United States | Northwest Bridge & Iron Company | Portland, Oregon | Swiftsure | Tanker | For USSB/Swiftsure Oil Transport Co. |
| 16 December | United Kingdom | Harland & Wolff | Belfast | Britmex No.10 | Oil barge | For British Mexican Petroleum Company. |
| 16 December | United Kingdom | Harland & Wolff | Belfast | Oroya | Passenger ship | For Pacific Steam Navigation Company. |
| 20 December | Germany | Schiffbau-Gesellschaft Unterweser AG | Bremen | Faust | Coaster | For H Dauelsberg |
| 20 December | United Kingdom | Harland & Wolff | Belfast | Gorilla | Coaster | For Coast Lines. |
| 22 December | United States | Pacific Coast Shipbuilding Company | Bay Point, California | Meanticut | Cargo ship | For United States Shipping Board |
| 23 December | United Kingdom | Barclay Curle | Scotstoun | Magnava | Passenger ship | For British India Steam Navigation Company |
| 23 December | Denmark | Kjøbenhavns Flydedol & Skibsværft | Copenhagen | Corvus | Cargo ship | For Det Bergenske Dampskibsselskab |
| 25 December | United Kingdom | Harland & Wolff | Belfast | Glenbeg | Cargo ship | For Glen Line. |
| 28 December | United Kingdom | Harland & Wolff | Belfast | Britmex No.11 | Oil barge | For British Mexican Petroleum Company. |
| 28 December | United Kingdom | Harland & Wolff | Belfast | Cochrane | Refrigerated cargo ship | For Elder Dempster. |
| 28 December | Japan | Kure Naval Arsenal | Kure | Submarine No. 36 (Ro-19) | Kaichū III-type submarine | For Imperial Japanese Navy |
| Unknown date | United Kingdom | Ropner & Sons | Sunderland | Alness | Cargo ship | For private owner. |
| Unknown date | Italy | Societa per Azioni Ansaldo | Sestri Ponente | Ansaldo VIII | Cargo ship | For private owner. |
| Unknown date | United Kingdom | Bushell Bros. | Tring | Bess | Tug | For London Haulage Co Ltd. |
| Unknown date | United States | American International Shipbuilding, | Hog Island, Philadelphia, Pennsylvania | Calumet | Hog Islander | For United States Shipping Board |
| Unknown date | Canada | Canadian Vickers | Montreal | Canadian Commander | Refrigerated cargo ship | For Canadian National Steamships |
| Unknown date | United Kingdom | Brown's Shipbuilding & Dry Dock Co. Ltd | Hull | Chimera | Steam drifter | For private owner. |
| Unknown date | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | Darien | Coal barge | For Panama Canal Company. |
| Unknown date | United Kingdom | J. Blumer & Co. Ltd. | Sunderland | Daybeam | Cargo ship | For private owner. |
| Unknown date | United Kingdom | W. Harkess & Sons Ltd. | Middlesbrough | Enugu | Cargo ship | For Government of Nigeria. |
| Unknown date | United Kingdom | Ardrossan Shipyard | Ardrossan | Eveleen | Coaster | For J Mulligan & Co. Ltd. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Fogbreak | Fishing vessel | For Royal Navy, but completed as a commercial fishing vessel. |
| Unknown date | Germany | Joh. C. Tecklenborg | Wesermünde | Frauenfels | Cargo ship | For Hansa Line. |
| Unknown date | Austria-Hungary | Ganz & Co | Rijeka | Hunyar | Passenger ship | For Jadranska Plovidba |
| Unknown date | United Kingdom | Berthon Boat Co. Ltd | Lymington | Lop | Steam drifter | For Admiralty, completed as a commercial fishing vessel. |
| Unknown date | United Kingdom | Abdela & Mitchell Ltd. | Brimscombe | Lysaght Gull | Barge | For John Lysaght Ltd. |
| Unknown date | United Kingdom | Abdela & Mitchell Ltd. | Brimscombe | Lysaght Petrel | Barge | For John Lysaght Ltd. |
| Unknown date | United Kingdom | Berthon Boat Co. Ltd | Lymington | Maelstrom | Steam drifter | For Admiralty, completed as a commercial fishing vessel. |
| Unknown date | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | Mamei | Coal barge | For Panama Canal Company. |
| Unknown date | United Kingdom | J. W. Brooke & Co. Ltd. | Lowestoft | Moonset | Naval drifter | For Royal Navy but completed as a commercial fishing drifter. |
| Unknown date | United Kingdom | Vickers-Armstrongs Ltd. | Barrow-in-Furness | Narrangassett | Tanker | For Anglo-American Oil Co. Ltd. |
| Unknown date | United Kingdom | J. W. Brooke & Co. Ltd. | Lowestoft | Ocean Swell | Drifter | For private owner. |
| Unknown date | Germany | Krupp | Emden | Orlanda | Cargo ship | For Rhederi AG von 1896 |
| Unknown date | United Kingdom | J. W. Brooke & Co. Ltd. | Lowestoft | Outline | Drifter | For John W. Brooke, John W. M. Brooke and Adrian Lodge. |
| Unknown date | United Kingdom | J. W. Brooke & Co. Ltd. | Lowestoft | Puff | Drifter | For private owner. |
| Unknown date | United Kingdom | R. Duncan & Co. | Port Glasgow | Ramon de Larrinaga | Cargo ship | For Larrinaga Steamship Co. Ltd. |
| Unknown date | United States | Todd Dry Dock and Construction Company | Tacoma, Washington | Rotarian | Design 1914 ship | For United States Shipping Board |
| Unknown date | United Kingdom | Earle's Shipbuilding Co. Ltd. | Hull | Salerno | Cargo ship | For Ellerman's Wilson Line. |
| Unknown date | Germany | AG Weser | Bremen | Sturmfels | Cargo ship | For Hansa Line. |
| Unknown date | United States | | | Sugillenco | Cargo ship | For United States Shipping Board. |
| Unknown date | United States | Submarine Boat Company. | Newark, New Jersey | Sulanierco | Cargo ship | For United States Shipping Board. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | S. W. Electra | Steamship | For Isaac J. Abdela & Mitchell Ltd. |
| Unknown date | United States | Atlantic Corporation | Portsmouth, New Hampshire | Tolosa | Design 1019 ship | For United States Shipping Board |
| Unknown date | Germany | Blohm & Voss. | Hamburg | Urundi | Cargo ship | For Deutsche East Africa Line. |
| Unknown date | United States | Long Beach Shipbuilding | Long Beach, California | West Kedron | Design 1019 ship | For United States Shipping Board |
| Unknown date | United Kingdom | J. W. Brooke & Co. Ltd. | Lowestoft | Williwaw | Naval drifter | For Royal Navy, but completed as a commercial drifter. |
| Unknown date | Netherlands | Van Duivenijks Scheepswerft. | Lekkerkerk | Willem Van Driel Sr. | Cargo ship | For private owner. |
| Unknown date | United Kingdom | William Doxford & Sons Ltd. | Pallion | Yngaren | Cargo ship | For Rederi Transatlantic A/B. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Barge | For private owner. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Barge | For private owner. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Barge | For private owner. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Barge | For private owner. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Barge | For private owner. |
| Unknown date | United Kingdom | I. J. Abdela & Mitchell Ltd. | Queensferry | Unnamed | Sternwheeler | For private owner. |