Southorpe is a settlement and civil parish located in the county of Cambridgeshire, England. It currently falls within the Peterborough unitary authority area, though it was historically part of the Soke of Peterborough, an area traditionally associated with Northamptonshire.
For electoral purposes, Southorpe is situated within the Barnack ward of the North West Cambridgeshire constituency. The nearest town to the parish is Stamford in Lincolnshire. As of 2021, the population of the parish was recorded at 145 residents.