1891 in architecture#Births

{{See also|Category:Buildings and structures completed in 1891}}

File:20070613 Ludington Building crop.JPG – Chicago]]

File:Opernhaus Zürich - Sechseläutenplatz 2013-08-31 18-30-40.JPG, Switzerland]]

• October 7 — Uris Library at Cornell University, designed by William Henry Miller, opens{{cite web |title=Uris Library Historical Tour: Introduction |url=https://olinuris.library.cornell.edu/uris-history |website=Cornell University Library |publisher=Cornell University |access-date=30 October 2018}}
• Ludington Building – Chicago, designed by William Le Baron Jenney, earliest surviving steel-framed building in the city, and the earliest entirely terracotta-clad skyscraper (8 storeys).{{cite web|title=Ludington Building, 1104 Wabash Campus 1104 S. Wabash Ave.|url=http://www.lib.colum.edu/archives/college/buildings/1104wabash.htm |year=2006|publisher=Columbia College Chicago|access-date=2012-05-28}}
• Manhattan Building – Chicago, designed by William Le Baron Jenney, completed; world's earliest surviving steel-framed building to use a purely skeletal supporting structure.{{usurped|1=[https://web.archive.org/web/20040926185211/http://www.emporis.com/en/wm/bu/?id=117280 Manhattan Building, Chicago.]}} Emporis Buildings (URL accessed 9 July 2006).[http://memory.loc.gov/cgi-bin/query/r?ammem/hh:@field(DOCID+@lit(IL0052)) Manhattan Building, 431 South Dearborn Street, Chicago, Cook County, IL.] American Memory from the Library of Congress (URL accessed 9 July 2006).
• Second Leiter Building – Chicago, designed by William Le Baron Jenney.
• Monadnock Building – Chicago, tallest masonry load-bearing wall building when built.
• Sacred Heart Cathedral – Davenport, Iowa, designed by James J. Egan.
• St. Ambrose Cathedral – Des Moines, Iowa, designed by James J. Egan.
• San Sebastian Church (Manila).
• Wainwright Building – St. Louis, Missouri, designed by Dankmar Adler and Louis Sullivan.
• University of Pennsylvania Library – Philadelphia, Pennsylvania, designed by Frank Furness.
• Several buildings constructed for the General Land Centennial Exhibition world fair – Prague, including the Art Nouveau Průmyslový Palace.
• Victoria Hall (Geneva), Switzerland, a concert hall designed by Marc Camoletti.
• Stadttheater Zürich, designed by Fellner & Helmer, opened.
• House of the Estates in Helsinki, Finland, built.
• General Post Office, Birmingham, England, designed by Henry Tanner.
• Palace Theatre, Manchester, England, designed by Alfred Darbyshire.
• Château de l'Île (Schloss Inselburg), Ostwald, Bas-Rhin, France (then Germany).

• RIBA Royal Gold Medal – Arthur Blomfield.
• Grand Prix de Rome, architecture: Henri Eustache.

• January 2 – Giovanni Michelucci, Italian architect, urban planner and engraver (died 1990)
• August 2 – Joseph Charles Fowell, Australian architect (died 1970)
• date unknown – Kanippayyur Shankaran Namboodiripad, Nambudiri Brahmin and Royal Architect (died 1981)
• date unknown – Giuseppe Psaila, Maltese Art Nouveau architect (died 1960)

• January 11 – Baron Haussmann, French civic planner notable for the rebuilding of Paris in the 1860s (born 1809){{cite book|first=David H.|last=Pinkney|title=Napoleon III and the Rebuilding of Paris|location=Princeton, N.J.|publisher=Princeton University Press|orig-year=1958|edition=Paperback|year=1972 |isbn=0-691-00768-3}}
• January 15 – John Wellborn Root, Chicago architect (born 1850; pneumonia){{cite book|last=Lanctot|first=Barbara|title=A Walk Through Graceland Cemetery|publisher=Chicago Architectural Foundation|year=1988|pages=14–15}}
• January 22 – Miklós Ybl, Hungarian architect (born 1814)
• January 23 – Friedrich von Schmidt, Austrian architect working in Vienna (born 1825)
• March 19 – Jānis Frīdrihs Baumanis, Latvian architect (born 1834)
• April 7 – J. D. Sedding, English ecclesiastical architect (born 1838)
• May 7 – John Hayward, English Gothic Revival architect (born 1807)

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