Barnwell is a village in North Northamptonshire in England, 2 miles (3.2 km) south of the town of Oundle, 78 miles (126 km) north of London and 14 miles (22.5 km) south-west of Peterborough. The River Nene runs north of the village, separating it from Oundle.

North Northamptonshire is one of two local government districts in Northamptonshire, England. It is a unitary authority area forming about one half of the ceremonial county of Northamptonshire. It was created in 2021. Its council is based in Corby, the district's largest town. Other notable towns are Kettering, Wellingborough, Rushden, Raunds, Desborough, Rothwell, Irthlingborough, Thrapston and Oundle.