Sir Peter Cook RA (born 22 October 1936) is an English architect, lecturer and writer on architectural subjects. He was a founder of Archigram, and was knighted in 2007 by the Queen for his services to architecture and teaching. He is also a Royal Academician and a Commandeur de l'Ordre des Arts et des Lettres of the French Republic. His achievements with Archigram were recognised by the Royal Institute of British Architects in 2004, when the group was awarded the Royal Gold Medal.
Cook was awarded a knighthood in the Queen's 2007 Birthday Honours List, for services to architecture.
His first building in the UK, a new drawing studio at the Arts University Bournemouth was opened by Zaha Hadid in March 2016. He also built the innovation studio at the Arts University Bournemouth, which was opened by Odile Decq in 2021.