William Curtis Green RA, FRIBA (16 July 1875 – 26 March 1960) was an English architect, designer and barrister who was based in London for much of his career. His works include the Dorchester Hotel, Wolseley House, New Scotland Yard, and the buildings, including the former Manor House, in Stockgrove Country Park. He was awarded the Royal Gold Medal in 1942. Around 20 of his designs are listed buildings. He is the younger brother of the craftsman and furniture designer Arthur Romney Green.