Sponne School in Towcester, Northamptonshire, England, is the oldest secondary school in Northamptonshire, and one of the oldest in the country. Part of the school was originally Towcester Grammar School, until Grammar schools were abolished in Northamptonshire. In 1968, the Grammar school was joined with the next-door Secondary Modern school, and the school was renamed Sponne, after Archdeacon William Sponne, who was Rector at the nearby St. Lawrence Church in the 15th century and the original founder of the school.

Towcester is a market town and civil parish in the West Northamptonshire unitary authority area of Northamptonshire, England. From 1974 to 2021, it was the administrative centre of the South Northamptonshire district.