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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 [1]
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 [2]
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 and Wolff	Belfast	Servian	Passenger ship	for the Wilson & Furness-Leyland Line
26 February	United Kingdom	Harland & Wolff	Belfast	Columbus	Passenger ship	For Dominion Line
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 [2]
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. [3]
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 [4]
20 May	Russia	Baltic Shipyard	Saint Petersburg	Almaz	Cruiser	for the Imperial Russian Navy
22 May	United Kingdom	Harland and 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
8 July	Germany	Schichau-Werke	Elbing	S119	S90-class torpedo boat	for the Imperial German Navy [2]
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. [5]
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	Ottoman Empire	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
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. [6]
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 and 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. [7]
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. [8]
December	Austria-Hungary		Pola	Sankt Georg	Armoured cruiser	for the Austro-Hungarian Navy
Date unknown	United States	Chicago Shipbuilding Company.	Chicago, Illinois	John Crerar	Cargo ship	For private owner. [9]

Sources

• Mitchell, WH; Sawyer, LA (1990). The Empire Ships (Second ed.). London, New York, Hamburg, Hong Kong: Lloyd's of London Press Ltd. ISBN  1-85044-275-4.