The year 1782 in architecture involved some significant events.

• Holy Trinity Church, Warsaw, designed by Szymon Bogumił Zug, is completed.
• Havana Cathedral is consecrated.
• Hôtel de Mademoiselle de Condé town house in Paris, designed by Alexandre-Théodore Brongniart, is completed (approximate date).^[1]
• Hôtel de Salm town house in Paris, designed by Pierre Rousseau, is built.
• Amphithéâtre Anglais in Paris opened.
• Royal Swedish Opera in Stockholm, designed by Carl Fredrik Adelcrantz, is opened.
• Frankfurter National-Theater in Frankfurt in Hesse, designed by Johann Andreas Hardt Lieb, is opened.
• Nottingham General Hospital in England, designed by John Simpson, is opened to patients.
• Kurfürstlicher Pavillon at Schönbusch (Aschaffenburg) in Bavaria, designed by Emanuel Herigoyen, is completed.
• Lohn Estate house in the Swiss canton of Bern is designed by Carl Ahasver von Sinner.
• Oxenfoord Castle in Scotland is rebuilt to designs by Robert Adam.

• May 6 – Construction of Grand Palace and Front Palace in Bangkok begins.

• Grand Prix de Rome, architecture: Pierre Bernard.

• August 15 – James Smith of Jordanhill, Scottish merchant, antiquarian and architect (died 1867)
• Kazimierz Jelski, Polish architect and sculptor (died 1867)

• January 4 – Ange-Jacques Gabriel, French architect (born 1698)
• June 18 – John Wood, the Younger, English architect working in Bath (born 1728)
• June 26 – Antonio Visentini, Venetian architect, painter and engraver (born 1688)