# List of ship launches in 1903

The list of ship launches in 1903 includes a chronological list of ships launched in 1903. 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 | Armstrong Whitworth | Elswick | Constitución | Swiftsure-class battleship | for the Chilean Navy, sold to the Royal Navy before delivery. |
| 14 January | United States | Union Iron Works | San Francisco, California | Pike | Plunger-class submarine | for the United States Navy, sponsored by Mrs. Frank Baker Zahm |
| 15 January | United Kingdom | Vickers, Sons & Maxim | Barrow-in-Furness | Libertad | Swiftsure-class battleship | for the Chilean Navy, sold to the Royal Navy before delivery. |
| 15 January | United Kingdom | Portsmouth Dockyard | Portsmouth | Suffolk | Monmouth-class cruiser | for the Royal Navy |
| 31 January | United States | W. A. Boole & Son | Oakland, California | Lagunitas | stern wheel ferry | |
| 4 February | Germany | Schichau-Werke | Elbing | S117 | S90-class torpedo boat | for the Imperial German Navy |
| 13 February | United Kingdom | Hawthorn Leslie | Newcastle upon Tyne | Eden | River-class destroyer | for the Royal Navy |
| 9 February | Italy | Ansaldo | Genoa | Nishin | Kasuga-class cruiser | for the Imperial Japanese Navy |
| 14 February | United Kingdom | Hawthorn Leslie | Newcastle upon Tyne | Derwent | River-class destroyer | for the Royal Navy |
| 19 February | United Kingdom | Harland & Wolff | Belfast | Servian | Passenger ship | for the Wilson & Furness-Leyland Line |
| 26 February | United Kingdom | Harland & Wolff | Belfast | Columbus | Passenger ship | For Dominion Line |
| 28 February | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | White Swan | Cargo ship | For Swan Line Ltd. |
| February | United States | Eastern Shipbuilding Company | Groton, Connecticut | Dakota | Passenger ship | for the Great Northern Steamship Company |
| 3 March | Germany | Blohm+Voss | Hamburg | Petschili | Barque | for F. Laeisz |
| 7 March | United States | Crescent Shipyard | Elizabethport, New Jersey | Chattanooga | Denver-class cruiser | for the United States Navy |
| 9 March | United Kingdom | Vickers | Barrow in Furness | A3 | A-class submarine | for the Royal Navy |
| 18 March | United Kingdom | Archibald McMillan & Son | Dumbarton | Clan Macalister | Cargo ship | For Clan Line |
| 18 March | United Kingdom | Gourlay Brothers | Dundee | Yarmouth | Cargo ship | For the Great Eastern Railway |
| 21 March | Germany | Schichau-Werke | Elbing | S118 | S90-class torpedo boat | for the Imperial German Navy |
| 26 March | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Cameronian | Coaster | For F. B. Cameron. |
| 4 April | United Kingdom | William Denny & Bros | Dumbarton | The Queen | Passenger ship | for the South Eastern and Chatham Railway |
| 9 April | United Kingdom | Harland & Wolff | Belfast | Marmora | Passenger ship | For Peninsular & Oriental Steam Navigation Company. |
| 15 April | United Kingdom | Vickers | Barrow in Furness | A2 | A-class submarine | for the Royal Navy |
| 16 April | United States | Eastern Shipbuilding Company | Groton, Connecticut | Minnesota | Passenger ship | for the Great Northern Steamship Company |
| 18 April | United States | Newport News Shipbuilding | Newport News, Virginia | West Virginia | Pennsylvania-class cruiser | for the United States Navy |
| 25 April | United States | William Cramp & Sons | Philadelphia, Pennsylvania | Colorado | Pennsylvania-class cruiser | for the United States Navy |
| 6 May | United States | Jenks Shipbuilding Company | | Eastland | Passenger ship | for the Michigan Steamship Company |
| 13 May | United Kingdom | Fairfield Shipbuilding and Engineering Company | Govan | Commonwealth | King Edward VII-class battleship | for the Royal Navy |
| 13 May | United Kingdom | William Doxford & Sons | Pallion | Clan Macneil | Turret type Cargo ship | for Clan Line |
| 14 May | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Greenwood | cargo ship | For Tyneside Line Ltd. |
| 20 May | Russia | Baltic Shipyard | Saint Petersburg | Almaz | Cruiser | for the Imperial Russian Navy |
| 22 May | United Kingdom | Harland & Wolff | Belfast | Ionic | Athenic-class ocean liner | for the White Star Line |
| 26 May | Germany | Schichau | Danzig | Elsass | Braunschweig-class battleship | for the Imperial German Navy |
| 2 June | United States | Union Iron Works | Mare Island, California | Tacoma | Denver-class cruiser | for the United States Navy |
| 9 June | United Kingdom | Vickers | Barrow in Furness | A4 | A-class submarine | for the Royal Navy |
| 13 June | United Kingdom | William Denny & Brothers | Dumbarton | Brighton | Passenger ship | for the London, Brighton and South Coast Railway |
| 27 June | Germany | Kaiserliche Werft | Kiel | Roon | Roon-class armored cruiser | for the Imperial German Navy |
| 2 July | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | B.H.C. High Ferry No. 1 | Chain Ferry | For Blyth Harbour Commissioners. |
| 8 July | Germany | Schichau-Werke | Elbing | S119 | S90-class torpedo boat | for the Imperial German Navy |
| 9 July | Germany | AG Weser | Bremen | Bremen | Bremen-class cruiser | for the Imperial German Navy |
| 9 July | United Kingdom | Harland & Wolff | Belfast | Macedonia | Passenger ship | For Peninsular & Oriental Steam Navigation Company. |
| 23 July | United States | William R. Trigg Company | Richmond, Virginia | Galveston | Denver-class cruiser | for the United States Navy |
| 23 July | United Kingdom | Devonport Dockyard | Devonport | King Edward VII | King Edward VII-class battleship | for the Royal Navy |
| 25 July | Germany | AG Vulcan | Stettin | Hamburg | Bremen-class cruiser | for the Imperial German Navy |
| 25 July | United States | William Cramp & Sons | Philadelphia, Pennsylvania | Mecidiye | Protected cruiser | for the Ottoman Navy |
| 25 July | United States | New York Shipbuilding | Camden, New Jersey | Mongolia | Cargo liner | for the Pacific Mail Steamship Company |
| July | Italy | Società Esercizio Baccini | Genoa | Regina Elena | Barque | for Pietro Milesi, Genoa |
| 1 August | Russia | Sredne-Nevsky Shipyard | Saint Petersburg | Zhemchug | Protected cruiser | for the Imperial Russian Navy |
| 8 August | Belgium | Chantier Naval Anversois | Antwerp | Helsingfors | Passenger ship | For Helsingfors Ångfartygs Aktiebolaget |
| 11 August | United Kingdom | Fairfield Shipbuilding and Engineering | Govan | Armadale Castle | Passenger ship | For the Union-Castle Line |
| 22 August | United States | William Cramp & Sons,|Philadelphia, Pennsylvania | Pennsylvania | Pennsylvania-class cruiser | For the United States Navy |
| 25 August | United Kingdom | Vickers | Barrow in Furness | Dominion | King Edward VII-class battleship | for the Royal Navy |
| August | Russia | Baltic Shipyard | Saint Petersburg | Slava | Borodino-class battleship | for the Imperial Russian Navy |
| 12 September | United States | Newport News Shipbuilding | Newport News, Virginia | Maryland | Pennsylvania-class cruiser | for the United States Navy |
| 18 September | Germany | Germaniawerft | Kiel | Hessen | Braunschweig-class battleship | for the Imperial German Navy |
| 22 September | Germany | Kaiserliche Werft Danzig | Danzig | Berlin | Bremen-class cruiser | For the Imperial German Navy |
| 23 September | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Redwood | Cargo ship | For Tyneside Line Ltd. |
| 24 September | United Kingdom | Armstrong-Whitworth | Elswick | Hampshire | Devonshire-class cruiser | for the Royal Navy |
| September | Denmark | Burmeister and Wain | Copenhagen | Pacific | Cable ship | for the Great Northern Telegraph Company |
| 1 October | Russia | Sredne-Nevsky Shipyard | Saint Petersburg | Izumrud | Cruiser | for the Imperial Russian Navy |
| 4 October | Austria-Hungary | Stabilimento Tecnico Triestino | Trieste | Erzherzog Karl | Erzherzog Karl-class battleship | For the Austro-Hungarian Navy |
| 7 October | United Kingdom | William Beardmore and Company | Clydebank | Carnarvon | Devonshire-class cruiser | for the Royal Navy |
| 8 October | United Kingdom | John Brown & Company | Clydebank | Antrim | Devonshire-class cruiser | for the Royal Navy |
| 8 October | United Kingdom | Harland & Wolff | Belfast | President Lincoln | Passenger ship | For Hamburg America Line. |
| 10 October | Australia | | Bellingen | Alma Doepel | Schooner | |
| 30 October | Germany | AG Vulkan | Stettin | Preussen | Braunschweig-class battleship | for the Imperial German Navy |
| 2 November | United States | New York Shipbuilding Co. | Camden, New Jersey | Manchuria | Ocean liner | for the Pacific Mail Steamship Co. |
| 2 November | Japan | Yokosuka Naval Arsenal | Yokosuka, Kanagawa | Otowa | Cruiser | for the Imperial Japanese Navy |
| 7 November | United Kingdom | Harland & Wolff | Belfast | Enchantress | Yacht | For Admiralty |
| 21 November | United Kingdom | Harland & Wolff | Belfast | Baltic | Ocean liner | for the White Star Line |
| 1 December | Sweden | Kockums Shipyard | Malmö | Manligheten | Äran-class coastal defence ship | for the Royal Swedish Navy |
| 15 December | United Kingdom | Harland & Wolff | Belfast | Kenilworth Castle | Passenger ship | For Union-Castle Line. |
| 17 December | United Kingdom | Fairfield Shipbuilding and Engineering Company | Govan | Durham Castle | Ocean liner | for the Union-Castle Line |
| 17 December | France | FCM | La Seyne | Patrie | République-class battleship | for the French Navy |
| 19 December | United Kingdom | John Brown & Company | Clydebank | Hindustan | King Edward VII-class battleship | for the Royal Navy |
| 19 December | United Kingdom | Harland & Wolff | Belfast | Servian | Passenger ship | For Hamburg America Line. |
| December | Austria-Hungary | | Pola | Sankt Georg | Armoured cruiser | for the Austro-Hungarian Navy |
| 2nd Quarter | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | W.B.C. No. 1 | Hopper barge | For Wallsend Borough Council. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Atalanta | Steam drifter | For Lewis Duthie. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Ant | Steam drifter | For Great Yarmouth Steam Drifters Ltd. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Boy George | Steam drifter | For Charles A. Webster. |
| Unknown date | United Kingdom | Brown & Clapson | Barton-upon-Humber | Faith | Lighter | For John Charles Raper. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Isabella Ferguson | Steam drifter | For Catherine McLaren. |
| Unknown date | United States | Chicago Shipbuilding Company. | Chicago, Illinois | John Crerar | Cargo ship | For private owner. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Lively Hope | Steam drifter | For William Gardiner. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Magnet | Steam drifter | For James Farquhar. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Rubicon | Steam drifter | For Alexander Clark. |
| Unknown date | United Kingdom | Beeching Brothers Ltd. | Great Yarmouth | Thurne | Steam drifter | For Great Yarmouth Steam Drifters Ltd. |