John Albert Hay (24 November 1919— 27 January 1998) was a British Conservative politician.
Hay was born in Brighton, Sussex to John Edward Hay (Mayor of Brighton 1953) and May Hollingdale. He was brother to author Peter Thomas Hay. He was educated at Brighton, Hove and Sussex Grammar School. He served as a Sub Lieutenant in the Royal Navy during World War II and was invalided out. He married Beryl Found, the only daughter of Ret. Commander Herbert Found R.N and Alice Found. They had two children, Victoria (b. 1949) and Richard (b. 1953) Their marriage ended in divorce.
Hay worked as a solicitor practising in Brighton and London. He served as Chairman of the Young Conservatives 1947-49 and was elected to Parliament in 1950 as Member for Henley, South Oxfordshire. He became Parliamentary Private Secretary to the President of the Board of Trade, 1951–55, and later served as Parliamentary Secretary to the Ministry of Transport from 1959 to 1963 under Ernest Marples, where he introduced parking meters, and as the last Civil Lord of the Admiralty from 1963 to 1964, whereupon the reorganisation of the Ministry of Defence he became Parliamentary Under-Secretary of State for the Army until the Labour Party won the October 1964 General Election.