The year 1826 in architecture involved some significant architectural events and new buildings.

Buildings and structures

Buildings opened

• January 30 – The Menai Suspension Bridge over the Menai Strait in Wales, designed by Thomas Telford.
• December 17 – Helsinki Old Church, designed by Carl Ludvig Engel.

Buildings completed

• Cathedral of Chihuahua, Mexico.
• The Bank of England in London, designed by Sir John Soane.
• Cumberland Terrace in London, designed by John Nash and John Thompson.
• Alexander Nevsky Memorial Church in Potsdam, a very early example of Byzantine Revival architecture designed by Vasily Stasov.
• Stadttempel, Vienna, Austria.^[1]
• Sofienbad, Vienna, Austria.

Awards

• Grand Prix de Rome – Léon Vaudoyer

Births

• April 11 – Thomas Worthington, English architect based in Manchester (died 1909)
• July 18 – Edward Habershon, English architect (died 1900)
• August 2 — Thomas Alexander Tefft, American architect based in Providence, Rhode Island (died 1859)
• August 16 – Thomas Seaton Scott, Canadian architect (died 1895)

Deaths

• March 1 – Friedrich Weinbrenner, German architect and city planner (born 1766)^[2]
• July 4 – Thomas Jefferson, American polymath and neoclassical architect (born 1743)^[3]