Sir Nicholas Grimshaw is a prominent English architect, particularly noted for several modernist buildings, including London's Waterloo International railway station and the Eden Project in Cornwall. He was President of the Royal Academy from 2004 to 2011. He was chairman of Grimshaw Architects from its foundation to 2019, when he was succeeded by Andrew Whalley. He is a recipient of the RIBA Gold Medal.

Grimshaw Architects is an architectural firm based in London. Founded in 1980 by Nicholas Grimshaw, the firm was one of the pioneers of high-tech architecture. In particular, they are known for their design of transport projects including Amsterdam Bijlmer ArenA railway station, Waterloo International railway station and the award-winning Southern Cross railway station which was the recipient of the Royal Institute of British Architects Lubetkin Prize. Grimshaw is behind the design of the Sustainability Pavilion, an innovative net-zero building, for Expo 2020. The firm currently has offices in Los Angeles, New York, London, Paris, Dubai, Melbourne and Sydney, employing over 600 staff.