Sir Peter Spencer Bowness, Baron Bowness CBE DL (b. 19 May 1943) is a British Conservative politician and member of the House of Lords.

Bowness was educated at Whitgift School , Croydon and the Law Society School of Law and College of Law. He began work as a solicitor in 1966.

Peter Bowness became a Croydon Councillor and soon rose within Conservative Party ranks. Bowness became Leader of the Council, London's largest borough. During the 1980s, Bowness was said to have been one of Margaret Thatcher's favourite Council leaders, knighted in 1987 and instrumental in the abolition of the GLC. He was unusual amongst his Conservative colleagues, however, for supporting Ken Livingstone's low-cost public transport initiative, Fares Fair.

He continued as Leader until 1994 when the Labour Party won the local elections. He stepped down from the Council in 1998. He served as a member of the Committee of the Regions and the Audit Commission .

In 1996, Bowness was created a life peer, Baron Bowness of Warlingham in the County of Surrey and of Croydon in the London Borough of Croydon. He served as a Conservative frontbencher on local government and transport matters in the House of Lords but resigned with several colleagues in 1998, disgusted by the treatment of Viscount Cranborne by William Hague over House of Lords reform.

Bowness was made Freeman of the City of London in 1984 and Honorary Freeman of the London Borough of Croydon in 2002. He was awarded the CBE in 1981 and a Knighthood in 1987. He is a patron of the Warehouse Theatre and was formerly a Governor of the Whitgift Foundation .