1739 in architecture

Buildings

 * Holy Trinity Church (Berlin), designed by Christian August Naumann, completed.
 * Church of Santa Felicita, Florence, rebuilt by Ferdinando Ruggieri, completed.
 * Church of Saint Ildefonso, Porto, Portugal, inaugurated.
 * New Room, Bristol, England (Wesleyan Methodist chapel).
 * Amalienburg, Munich, Bavaria, designed by François de Cuvilliés, completed.
 * Schloss Meseberg, Germany.
 * Prinz-Albrecht-Palais, Berlin, completed.
 * Crowcombe Court, Somerset, England, designed by Thomas Parker, completed.
 * Old Colony House, Newport, Rhode Island, designed by Richard Munday.
 * Frescati House, Blackrock, Dublin, Ireland.
 * Nahar Singh Mahal, Ballabhgarh, India (approximate date).
 * Catherine Canal, Saint Petersburg, dug.

Births

 * January 19 – Joseph Bonomi the Elder, Italian architect working in England (died 1808)
 * February 15 – Alexandre-Théodore Brongniart, French architect (died 1813)
 * September 15 – Juan de Villanueva, Spanish architect (died 1811)
 * date unknown – Antonio Cachia, Maltese architect, civil and military engineer and archaeologist (died 1813)

Deaths

 * May 10 – Cosmas Damian Asam, German painter and architect (born 1686)
 * Richard Munday, American colonial architect (born c.1685)