Peter Michael Ainsworth (November 16, 1956 – April 6, 2021) was an English politician and was Shadow Secretary of State for Environment, Food and Rural Affairs. He was the Member of Parliament for the East Surrey constituency in the United Kingdom. He was first elected in the 1992 general election, but decided not to stand for reelection in 2010.
He was a member of the Conservative Party.
Ainsworth died on April 6, 2021 at the age of 64.