The year 1925 in architecture involved some significant events.
- Mount Pleasant Library (Washington, D.C.), designed by Edward Lippincott Tilton, opens
- Great Synagogue (Tel Aviv), designed by Yehuda Magidovitch, is completed
- Administration Building at Texas Technological College (modern-day Texas Tech University) in Lubbock, Texas, designed by Wyatt C. Hedrick, opens
- Altare della Patria (Monumento Nazionale a Vittorio Emanuele II) in Rome, designed by Giuseppe Sacconi (died 1905) in 1884, is completed
- Uppståndelsekapellet (Resurrection Chapel), Skogskyrkogården (Woodland Cemetery), Stockholm, Sweden, designed by Sigurd Lewerentz, is built
- Villa Le Trident at Théoule-sur-Mer on the French Riviera, designed by Barry Dierks, is built.
- April–October – International Exhibition of Modern Decorative and Industrial Arts (Exposition Internationale des Arts Décoratifs et Industriels Modernes) in Paris.
- May 25 – Second Madison Square Garden (the version built 1890 and designed by Stanford White) is closed on this date and demolished shortly after.
- St. Bernard de Clairvaux Church (12th century) is shipped from Sacramenia, Segovia, Spain to the United States by William Randolph Hearst.
- AIA Gold Medal – Edwin Lutyens; Bertram Goodhue.
- Royal Gold Medal – Giles Gilbert Scott.
- Prix de Rome, architecture: Alfred Audoul.
- January 14 – Aarno Ruusuvuori, Finnish architect (died 1992)
- January 17 – Gunnar Birkerts, Latvian American architect (died 2017)
- April 6 – Paul Ritter, Australian architect, town planner, sociologist, artist and author (died 2010)
- May 18 – Justus Dahinden, Swiss architect and writer
- May 31 – Frei Otto, German Pritzker Prize-winning architect and structural engineer (died 2015)
- June 25 – Robert Venturi, American Pulitzer Prize-winning architect (died 2018)
- August 20 – Henning Larsen, Danish architect (died 2013)
- January 8 – Stewart Henbest Capper, British Arts and Crafts architect (born 1859)
- April 13 – August Endell, German Jugendstil architect and designer (born 1871)
- September 13 – Emily Elizabeth Holman, American architect (born 1854)
- December 26 – Jan Letzel, Czech architect (born 1880)
- "Mad. Sq. History: Madison Square Garden". Madison Square Park. Madison Square Park Conservancy. Retrieved 31 October 2018.
- "Justus Dahinden". Great Buildings. Archived from the original on 2014-06-13. Retrieved 2014-05-25.
- Velinger, Jan (2005-08-03). "A look at the Czech architect who built Hiroshima's Industrial Promotion Hall — today's A-Bomb Dome". Prague: Radio Praha. Retrieved 2017-09-20.