The year 1841 in architecture involved some significant events.

• April 13 – Original Semperoper in Dresden, designed by Gottfried Semper, opened.
• September 2 – Leeds Parish Church reconsecrated after reconstruction.^[1]
• Pori Old Town Hall in Finland, designed by Carl Ludvig Engel, completed.

• English architect Augustus Pugin publishes an article on English parish churches in the Dublin Review (London Catholic periodical); two lectures on The True Principles of Pointed or Christian Architecture and a revised edition of his 1836 book Contrasts.

• Grand Prix de Rome, architecture: Alexis Paccard.

• February 7 – Auguste Choisy, French architect (died 1909)
• July – Richard Carpenter, English architect (died 1893)
• July 10 – John Belcher, English architect (died 1913)
• July 17 – John Oldrid Scott, English architect (died 1913)

• July 13 – Otto Wagner, Austrian architect (died 1918)
• August 12 – Franz Heinrich Schwechten, German architect (died 1924)
• November 19 – Frigyes Schulek, Hungarian architect (died 1919)

• October 9 – Karl Friedrich Schinkel, Prussian architect (born 1781)
• December 30 – John Foulston, English architect working in Plymouth (born 1772)