Overstone Park School is an independent co-educational day school near Northampton, England, for pupils aged 3 months to 18 years.
The school was established in 1983 by husband and wife Corville Oliver Brown and Marion Faith Brown. Mrs. Brown is now the Principal of the school, while Mr. Brown is the Bursar. The school is housed in a purpose-built building on a 12-acre (49,000 m2) site in the 340-acre (1.4 km2) Overstone country park in Northamptonshire. The school comprises four departments: the nursery (3 months – 2 years); pre-preparatory school (2–4 years); preparatory school (4–10 years); high school (10–18 years). The school has a Christian foundation. There are sixty-five boys and forty-one girls enrolled at the school.