Peter John Feilding Chapman-Walker (known as John Chapman-Walker) (27 April 1907 – 28 February 1958) was a solicitor and local politician.
Born in Chelsea, Chapman-Walker was educated at Marlborough and the Sorbonne. He was admitted a solicitor in 1930. His legal practice was in London although he also had a 200 acre farm near Ware in Hertfordshire.
He was active in the Conservative Party from a young age: unsuccessfully contesting parliamentary seats from 1929 (including the London seat of Holborn and St Pancras South at the 1950 general election).
He held a commission in the Hertfordshire Regiment, part of the reserve Territorial Army, from 1926. Called into active service during World War II he held a temporary commission with rank of colonel as commanding officer of Z Special Unit, a special forces unit formed to fight behind Japanese lines in the Pacific theatre from 1942-45. He was granted the OBE in the Miltary Division in the 1944 New Years Honours.
He became chairman of the Westminster St George's Conservative Association. In March 1955 he was elected to the London County Council as a councillor representing the Cities of London and Westminster. He died suddenly, aged 50, shortly before finishing his three-year term of office on the county council. He was buried in Northumberland in the family grave of his wife, Dr Monica Bell, who he had married in 1939.