The year 1974 in architecture involved some significant architectural events and new buildings.

• October – The Victoria and Albert Museum in London under Roy Strong opens an influential exhibition. 'The Destruction of the Country House 1875–1975', documenting the destruction of country houses in 20th-century Britain.^[1][2]
• Heikkinen – Komonen Architects established by Mikko Heikkinen and Markku Komonen in Helsinki, Finland.

• Sears Tower in Chicago, Illinois, United States, designed by Skidmore, Owings and Merrill.
• Birmingham Central Library, Birmingham, UK, designed by John Madin (closed 2013).
• Horseferry Road Magistrates' Court in Westminster, London, designed by C. A. Legerton

• May 18 – The Warsaw radio mast in Poland, the second tallest structure ever built (it collapses on August 8, 1991).
• date unknown
• Renaissance Tower in Dallas, Texas, USA.
• AT&T Long Lines Building, 33 Thomas Street, New York, USA, designed by John Carl Warnecke.
• Kamzik TV Tower in Bratislava, Slovakia.
• Guy's Tower in London, United Kingdom, the world's tallest hospital at this time.
• Hudson Bay Centre in Toronto, Ontario, Canada.
• Palace of Weddings, Vilnius, Lithuanian Soviet Socialist Republic, designed by Gediminas Baravykas.
• Plastic classroom, Kennington Primary School, Preston, England.^[3]
• Hotel du Lac, Tunis, designed by Raffaele Contigiani.
• Laurie Short House in Sydney, Australia, designed by Glenn Murcutt.

• Architecture Firm Award – Kevin Roche John Dinkeloo and Associates
• RAIA Gold Medal – Raymond Berg
• RIBA Royal Gold Medal – Powell & Moya
• Twenty-five Year Award – Johnson and Son Administration Building

• October 2 – Bjarke Ingels, Danish architect

• March 17 – Louis Kahn, American architect based in Philadelphia, USA (born 1901)
• April 6 – Willem Marinus Dudok, Dutch modernist architect (born 1884)
• April 25 – Gustavo R. Vincenti, Maltese architect and developer (born 1888)^[4]
• September 3 - Romuald Gutt, Polish architect (born 1888)
• November 28 – Konstantin Melnikov, Russian architect and painter (born 1890)
• December 12 – Sir Edward Maufe, English architect (born 1882)