Peter Wynford Innes Rees, Baron Rees, was a British Conservative politician and barrister. He was Member of Parliament (MP) for Dover and Deal from 1974 to 1983 and MP for Dover from 1970 to 1974 and 1983 to 1987. He was Chief Secretary to the Treasury from 1983 until 1985. He was created a life peer as Baron Rees, of Goytre, in 1987.

The Chief Secretary to the Treasury is a ministerial office in the government of the United Kingdom and is the second most senior ministerial office in HM Treasury, after the Chancellor of the Exchequer. The office was created in 1961 to share the burden of representing HM Treasury with the chancellor.