1903 in architecture

• January 31 – The Sängerhaus in Strasbourg opens with an inaugural concert.
• September – First Garden City Ltd formed to develop Letchworth in England with Barry Parker and Raymond Unwin as architects.
• The Group Plan for the civic center of Cleveland, Ohio, by Daniel Burnham, Arnold Brunner, and John Carrere is released.
• Giles Gilbert Scott wins the competition to design Liverpool Cathedral.

{{See also|Category:Buildings and structures completed in 1903}}

File:HillHouse.jpg, Scotland]]

• The Beurs van Berlage (Amsterdam Stock Exchange), designed by Hendrik Berlage.
• Hill House, Helensburgh, Scotland, designed by Charles Rennie Mackintosh.
• St Cyprian's, Clarence Gate, London, designed by Ninian Comper.
• St Ignatius Church, Stamford Hill, London, designed by Benedict Williamson, first portion.
• Juselius Mausoleum, Pori, Finland, designed by Josef Stenbäck.{{cite web|url=http://www2.pori.fi/english/tourism/juselius.html|title=The Juselius Mausoleum|publisher=City of Pori|accessdate=2013-11-29|url-status=dead|archiveurl=https://web.archive.org/web/20101222082837/http://pori.fi/english/tourism/juselius.html|archivedate=2010-12-22}}
• Palazzo Castiglioni (Milan), Italy, designed by Giuseppe Sommaruga.
• Wemyss Bay railway station in Scotland, rebuilt by James Miller.
• Communal Palace of Buzău, Romania, designed by Alexandru Săvulescu (died 1902).
• 22, Rue du Général de Castelnau in Strasbourg, France, designed by Franz Lütke and Heinrich Backes.
• 56, Allée de la Robertsau in Strasbourg, designed by Lütke and Backes.

• RIBA Royal Gold Medal – Charles Follen McKim.
• Grand Prix de Rome, architecture: Léon Jaussely.

• January 7 – Ioannis Despotopoulos, Greek architect and academic (died 1992)
• March 7 – Raymond McGrath, Australian-born architect, illustrator and interior designer working in the British Isles (died 1977)
• April 18 – Stephen Dykes Bower, English ecclesiastical architect (died 1994)
• June 17 – A. Hays Town, American architect known for commercial and domestic architecture (died 2005)
• July 16 – Adalberto Libera, Italian Modernist architect (died 1963)
• July 18 – Victor Gruen, Austrian-born architect of shopping malls (died 1980){{cite book|first=Alex|last=Wall|title=Victor Gruen: From Urban Shop to New City|publisher=Actar|location=Barcelona|year=2006|isbn=978-84-95951-87-8}}
• August 21 – F. S. Platou, Norwegian architect (died 1980)
• October 18 – Albert Frey, American "desert modernist" architect (died 1998)
• October 24 – Charlotte Perriand, French architect and designer (died 1999)

File:Louis Daniel Perrier.JPG]]

• May 29 – Bruce Price, American architect (born 1845)
• August 28 – Frederick Law Olmsted, American landscape architect, journalist, social critic and public administrator (born 1822){{cite news|url=https://timesmachine.nytimes.com/timesmachine/1903/08/29/105058805.pdf|title=F. L Olmsted is Dead; End Comes to Great Landscape Architect at Waverly, Mass. Designer of Central and Prospect Parks and Other Famous Garden Spots of American Cities|work=The New York Times|date=1903-08-29}}
• November 16 – Camillo Sitte, Austrian architect, painter and city planner (born 1843)
• date unknown – Louis-Daniel Perrier, Swiss architect (born 1818){{archINFORM|arch|41155}}

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