Malcolm Quantrill (25 May 1931 – 22 September 2009) was a British architect, academic and architecture theorist.
He was the first person to write critical monographs in any language on three individual Finnish modernist architects, Alvar Aalto – Alvar Aalto: A Critical Study (1983) – Reima Pietilä – Reima Pietilä: Architecture, Context, Modernism (1985) – and Juha Leiviskä – Juha Leiviska and the Continuity of Finnish Modern Architecture (2001).
He was a Fulbright Scholar and Albert Kahn Memorial Fellow at the University of Pennsylvania, US, earning a master's degree in 1955.
Quantrill's book on Alvar Aalto, Alvar Aalto: A Critical Study (1983), broke the mould of previous monographs that tended to be hagiographic eulogies of the master of modernist architecture.
In 1988, he was made a Knight of the Order of the Lion of Finland in recognition of his contributions to Finnish architecture.