Peakirk is a civil parish in the city of Peterborough, Cambridgeshire in the United Kingdom. For local government purposes it forms part of Glinton and Castor ward; for parliamentary purposes it falls within Peterborough constituency. In 2001, the parish had a population of 321 persons and 139 households. The Wildfowl and Wetlands Trust, founded by Sir Peter Scott in 1946 to preserve and maintain Britain's many species of waterfowl, had a reserve here until 2001. Peakirk Parish Council declared a climate emergency in 2019. As a result the Peakirk Climate Emergency Group was set up in 2020.